New BP not eating? Is that normal?

[DPlant]

The reason it shouldnt be inside is because the snake can move it pee on it or anything and make it inaccurate and cause it to over heat and burn the snake

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Ohh okay! I just sandwiched the probe and set the thermostat to 90 F!





BTW here are some pics of the BP! To me, he doesn't look underweight at all, despite not eating for a long time. (I can see a bit of his spine but it's not the triangular shape yet)
Also, he came out exploring after 15 minutes of me putting the probe in between the UTH and glass!

Does it look underweight to you guys though? My judgement probably is not correct.