How to tell if my ps5 needs a metal liquid refill

Hi.🙂✌🏽, my ps5 started shutting off randomly and gives me the message to turn the console off due to it overheating, It used to turn off in about 1 hour, i assumed the issue was that i had to clean it. I open up the lil fan plate and the fan automatically just fell on its own. After cleaning and reconnecting the fan then it started giving the message and turning off in about 5 minutes so i believe i need a fan for sure but how do i tell if it needs a metal liquid replacement?searched a couple of youtube videos but i’m not confident enough to do it myself lol. HELP PLSSSS 🙏🏽