Hello there, I'm Flip! I am a generally new snake owner, I had only owned one other snake before-a scaleless rat snake who I kept in a poorly locking tank in which he escaped and turned up...not alive three months later. I decided to get one a bit easier, and I got a handsome male pastel enichi ball python I call Asriel. I got him a month ago from an independent reptile shop, and I am unsure of how old he is. Here's his husbandry-

-16"x16"x23" locking terrarium
-150 watt CHE
-small 8 watt UTH
-coconut fiber bedding
-a half-log hideout (I'll be adding another hide)
-misting 2-3 times a day

He's had a mass of 103-106 grams since I've started weighing him. I notice that the terrarium is only in the low 80s, which is concerning.
Also, he absolutely will not eat. I've tried every week since getting him to feed, with no response whatsoever. No strikes, not even acknowledging the prey. The store feeds both live and f/t, but they said that they typically only feed small rats or large mice to their ball pythons. I tried out a pinkie as a trial run, which he refused, which I sort of expecting. I tried out a small rat then, warmed up and slightly..juicy, along with 'running' it around the terrarium and leaving it out overnight, with still no response. I'm getting a bit concerned and disheartened, if he still doesn't eat by the end of this month I'll be contacting the store for some advice. I'd rather not feed live (i'm also a rodent owner, I have hamsters and guinea pigs, so hearing the little shriek is disheartening. I know it's the food chain and all, but as a rodent owner it does hit a little too close to home) but if push comes to shove I'll consider it. He's not loosing weight/mass, so that's good I think?

Any help with feeding and any tips with adjusting the husbandry is greatly appreciated-I really need it!

Thanks in advance.