I have no idea how old he is. When we got him he was 130g. He is now about 105g. We is in a tub on a heated rack. The temps closest to the heat is in the high 80s. Humidity is a little above 50%. He has a hide and water dish. I have tried mouse pinks and hoppers, and rat pinks. Both live and frozen.
What are you using to measure the temp and humidity?
0.0.1 Normal Ball Python
1.0 Albino Ball Python
0.1 Het Snow BCI
1.0 Lesser Ball Python
Maybe try a 16 Quart tub. Put just a hide and a small water dish in there. Once the snake is inside the hide put the F/T meal right in front of the hide entrance. Leave it overnight if needed. Mine usually took the food within a few hours. I've had to do this for a few of my snakes to get them to eat until they got comfortable.