Raspberry Pi won’t connect to hotspot because of heat

Hi I'm right now taking part to a robotics competition (Robocup Korea) and I'm using a Raspberry Pi 4 to execute a python script. It was working perfectly and everything until, 30 minutes before my match, the Raspberry starts heating a lot and I decided to unpower it to let it refresh. The problem is that I'm using SSH and normally the Raspberry is configured to connect to a hotspot. When I powered the Raspberry back, it heated super fast. And it would not connect to the hotspot so I couldn't SSH and we lost the match. Please can someone help me I really need to fix this before 12H ? Ps : Raspberry Pi 4, no lite mode, both lights on when powered