BP not eating but also not losing that much weight

[Cheesenugget]

Oh wow! Did it take you long to get your BP to eat?
Husbandry:
84-88 F on hot side and 75-80 on cool side (I've recently installed a CHE with a thermostat). However, I turn it off at night so the temps drop to 73 F.
In addition, I've noticed that the BP has been more active outside its hide and has been wandering a lot more after the addition of the CHE. Could there be a possible explanation to this? (BTW I am adding more clutter)

3 weeks and it would have been longer if I did not follow Deborah's sticky on how to get him to eat. Since then, he had flourished and ate well.

I don't use CHE for any of my reptiles but I would use a thermostat with it due to its ability to be too hot. Your temps should be confirmed with a temp gun if you don't already have one. CHE dries out the temp plus you have aspen in there, what is your humidity %? Too low can make him feel uncomfortable and eventually get sick, plus shedding issues.

I would also NOT go for night drops unless you have many years of experience under your belt, you know what you are doing, and your animal has been eating for you. Bp's are sensitive to changes.

Lastly, I would recommend following Deborah's sticky on how to get him to eat.