Possible shed or burns?

Hello! I
My big lemon last bp has stopped eating again. I stopped holding her (because she won't eat) but do check on her. Today I checked on her and she got darker/ duller and her belly is bright pink. Her eyes are not cloudy and I don't know what is going on. Her heat temp is 88-90 degrees and I am very concerned. Any ideas/ tips?

Assuming your hot spot temps are 88-90 and regulated by a thermostat it sounds like early signs of shed. The pink belly is usually the earliest sign of an upcoming shed. Then the dulling of the skin. After that the eyes start to cloud and they'll stay "in blue" for typically a few days. Then their eyes will clear and skin will look "normal" again. A few days later expect a shed.

A lot of times they won't eat if they're coming up on a shed. I've had good luck offering the day after a shed. A lot of times they're "spent" from the shed and looking to "refuel".