I would also replace the thermal grease. Overheating is probably the combo of dry thermal paste and a dirty heatsink. Air cooling isn’t possible if the heat is not being transferred to the heatsink. I would suggest MX5 paste:
[link|https://www.amazon.com/ARCTIC-MX-5-Incl-Spatula-Non-Conductive/dp/B08T5Q4J7H/ref=sr_1_6?crid=3I085TSUBPDC0&keywords=mx5+thermal+paste&qid=1641076091&s=electronics&sprefix=mx5+%2Celectronics%2C702&sr=1-6|Amazon.com/mx5-with-spatula-6523?72874738]