Repasting Acer Nitro 791g + pump out issues

Hi, to keep this short, I've had my laptop for nearly 3 years now. It has a 4720HQ and GTX 950m. First year I left it as is to keep the warranty after which I repasted it with gelid gc extreme. Over the next year, the temperatures have slowly climbed to near stock levels and sometimes worse. So another year had passed and I again repasted the laptop but this time using prolimatech pk3. Again, temperatures were great for maybe 2-3 months before the cpu slowly started climbing up again and later on the gpu.

Idle temps aren't affected nearly as the max temps which have climbed in the range of 10-13C (GPU maxes out at 77 from 65 and CPU maxes out at 94 from 81 causing throttling under heavy load). Problem is my laptop requires removing the keyboard to access the internals and this is attached through clips which are breaking off. I can't constantly open it up to repaste. I considered buying IC graphite thermal pad as it's showing some great results and would help me alot but I can't know for sure whether my heatsink would sit flush and provide ample pressure.

If I am to stick to thermal paste, is there a way to reduce pump out effects? At Least for the next 2-3 years. Perhaps putting a little more than needed as LTT proved that too much wouldn't affect temps. Unless anyone is aware of a thermal paste that's very resistant to pump out effects (preferably not IC diamond).

Attached is how my heatsink setup looks like. The right side is the cpu and the left is gpu. Thank you.

So no one has a clue on how to reduce pump-out on laptops? Or any suggestions?