Go at it, I have a 1st gen Zephyrus 14inch and had bad heating problems, liquid metal there also initially that just didn't work due to bad application or whatever, repasted it and it's behaved way better.
I was quite nervious, but check Youtube, there's guaranteed some people that has documented the steps, do check multiple ones as some people are more detail oriented or just know what parts can be dangerous/tricky. Good tools can be a lifesaver also (isoprop alcohol for cleaning, lotsa q-tips, good screwdrivers and plastic picks like the fixit toolkits to pry gently).
I was quite nervious, but check Youtube, there's guaranteed some people that has documented the steps, do check multiple ones as some people are more detail oriented or just know what parts can be dangerous/tricky. Good tools can be a lifesaver also (isoprop alcohol for cleaning, lotsa q-tips, good screwdrivers and plastic picks like the fixit toolkits to pry gently).