Sticky paint layers on this kitchen repaint job

Hi this is a typical problem but not sure how to proceed. Customer wants these repainted.

When I sand the paint with a Random orbital sander the top layer (latex) heats up and bubbles, especially around handles where oils from hands have touched.

It is probably a lamination issue due to the bottom layer being oil.

How do I sand or degloss this until it is good enough for the ptch prime and paint of the final color? I will be using INSL-X cabinet coat for the repaint. Thanks.