diff --git a/.github/workflows/interface-unit-tests.yml b/.github/workflows/interface-unit-tests.yml
index 0dd8386d96d..4efba31b44c 100644
--- a/.github/workflows/interface-unit-tests.yml
+++ b/.github/workflows/interface-unit-tests.yml
@@ -71,6 +71,22 @@ jobs:
             "default": ["3.10"]
           }
           EOF
+          elif [ "${{ inputs.python_warning_level }}" == "error" ];
+          then
+            cat >python_versions.json <<-EOF
+          {
+            "default": ["3.12"],
+            "torch-tests": ["3.12"],
+            "tf-tests": ["3.12"],
+            "jax-tests": ["3.12"],
+            "all-interfaces-tests": ["3.12"],
+            "external-libraries-tests": ["3.12"],
+            "qcut-tests": ["3.12"],
+            "qchem-tests": ["3.12"],
+            "gradients-tests": ["3.12"],
+            "data-tests": ["3.12"],
+            "device-tests": ["3.12"]          }
+          EOF
           else
             cat >python_versions.json <<-EOF
           {
@@ -107,6 +123,18 @@ jobs:
             "device-tests": 2
           }
           EOF
+          elif [ "${{ inputs.python_warning_level }}" == "error" ];
+          then
+            cat >matrix_max_parallel.json <<-EOF
+          {
+            "default": 1,
+            "core-tests": 1,
+            "gradients-tests": 1,
+            "jax-tests": 1,
+            "tf-tests": 1,
+            "device-tests": 1
+          }
+          EOF
           else
             cat >matrix_max_parallel.json <<-EOF
           {
@@ -123,6 +151,19 @@ jobs:
           jq . matrix_max_parallel.json
           echo "matrix_max_parallel=$(jq -r tostring matrix_max_parallel.json)" >> $GITHUB_OUTPUT
 
+      - name: Enable splitting of tests
+        id: job_split
+        run: |
+          if [ "${{ inputs.python_warning_level }}" == "error" ];
+          then
+            ENABLE_SPLIT=0
+          else
+            ENABLE_SPLIT=1
+          fi
+
+          jq . matrix_max_parallel.json
+          echo "enable_split=$ENABLE_SPLIT" >> $GITHUB_OUTPUT
+
       - name: Setup Job to Skip
         id: jobs_to_skip
         env:
@@ -141,6 +182,7 @@ jobs:
       matrix-max-parallel: ${{ steps.max_parallel.outputs.matrix_max_parallel }}
       python-version: ${{ steps.python_versions.outputs.python_versions }}
       jobs-to-skip: ${{ steps.jobs_to_skip.outputs.jobs_to_skip }}
+      enable_split: ${{ steps.jobs_to_skip.outputs.enable_split }}
 
   torch-tests:
     needs:
@@ -219,7 +261,8 @@ jobs:
            || fromJSON(needs.setup-ci-load.outputs.matrix-max-parallel).default
          }}
       matrix:
-        group: [1, 2, 3]
+        group: >-
+          ${{ fromJSON(needs.setup-ci-load.outputs.enable-split) && [1, 2, 3] || [1] }}
         python-version: >-
           ${{
             fromJSON(needs.setup-ci-load.outputs.python-version).tf-tests
@@ -239,7 +282,7 @@ jobs:
       install_pennylane_lightning_master: true
       pytest_coverage_flags: ${{ inputs.pytest_coverage_flags }}
       pytest_markers: tf and not qcut and not finite-diff and not param-shift
-      pytest_additional_args: --splits 3 --group ${{ matrix.group }}
+      pytest_additional_args: ${{ fromJSON(needs.setup-ci-load.outputs.enable-split) == "1" && format('--splits {0} --group {1}', '3', matrix.group) || format('--splits {0} --group {1}', '1', matrix.group) }}
       pytest_durations_file_path: '.github/workflows/tf_tests_durations.json'
       pytest_store_durations: ${{ inputs.pytest_store_durations }}
       additional_pip_packages: pytest-split
@@ -258,7 +301,7 @@ jobs:
            || fromJSON(needs.setup-ci-load.outputs.matrix-max-parallel).default
          }}
       matrix:
-        group: [1, 2, 3, 4, 5]
+        group: ${{ fromJSON(needs.setup-ci-load.outputs.enable-split) && [1, 2, 3, 4, 5] || [1] }}
         python-version: >-
           ${{
             fromJSON(needs.setup-ci-load.outputs.python-version).jax-tests
@@ -278,7 +321,9 @@ jobs:
       install_pennylane_lightning_master: true
       pytest_coverage_flags: ${{ inputs.pytest_coverage_flags }}
       pytest_markers: jax and not qcut and not finite-diff and not param-shift
-      pytest_additional_args: --splits 5 --group ${{ matrix.group }}
+      pytest_additional_args: ${{ fromJSON(needs.setup-ci-load.outputs.enable-split) == "1" && format('--splits {0} --group {1}', '5', matrix.group) || format('--splits {0} --group {1}', '1', matrix.group) }}
+
+
       pytest_durations_file_path: '.github/workflows/jax_tests_durations.json'
       pytest_store_durations: ${{ inputs.pytest_store_durations }}
       additional_pip_packages: pytest-split
@@ -297,7 +342,7 @@ jobs:
            || fromJSON(needs.setup-ci-load.outputs.matrix-max-parallel).default
          }}
       matrix:
-        group: [1, 2, 3, 4, 5]
+        group: ${{ fromJSON(needs.setup-ci-load.outputs.enable-split) && [1, 2, 3, 4, 5] || [1] }}
         python-version: >-
           ${{
             fromJSON(needs.setup-ci-load.outputs.python-version).core-tests
@@ -317,7 +362,7 @@ jobs:
       install_pennylane_lightning_master: true
       pytest_coverage_flags: ${{ inputs.pytest_coverage_flags }}
       pytest_markers: core and not qcut and not finite-diff and not param-shift
-      pytest_additional_args: --splits 5 --group ${{ matrix.group }}
+      pytest_additional_args: ${{ fromJSON(needs.setup-ci-load.outputs.enable-split) == "1" && format('--splits {0} --group {1}', '5', matrix.group) || format('--splits {0} --group {1}', '1', matrix.group) }}
       pytest_durations_file_path: '.github/workflows/core_tests_durations.json'
       pytest_store_durations: ${{ inputs.pytest_store_durations }}
       additional_pip_packages: pytest-split
diff --git a/tests/pytest.ini b/tests/pytest.ini
index 372894779d5..19811af01bf 100644
--- a/tests/pytest.ini
+++ b/tests/pytest.ini
@@ -23,4 +23,3 @@ addopts = --benchmark-disable
 xfail_strict=true
 filterwarnings = 
     error::pennylane.PennyLaneDeprecationWarning
-    ignore:ImportWarning