Do or die?

[JEWSKIN]

He is on a 4L Really Useful Box (inside dimensions 12.5" x 8.5" x 3") with 2 small hides and a small water bowl on aspen bedding. Hot side is heated by a 3" flexwatt running constant temps at 90F measured with an acu-rite digital probe under the aspen, ambient temps at 80 (my house thermostat is set at 80 as well). Humidity at steady 60%. He has not been handled except when we clean his tub out or when we feed (every 5 days). He has only shed once since he was born.

His siblings are on identical set-ups and one is at 145g now and the other is at 149 grams. They have shed multiple times already. The problem feeder is exactly 52 grams 5 minutes ago which is only 7 grams more than when he hatched.

We have tried everything except braining method and f/t method. We have tried pre-kill, smaller size, different color, rat, mice, ASF, in the tub, out of the tub, in a deli cup in his tub, in a pillow case, overnight, etc.

We have taken him to the vet and the vet checked him out and said there's nothing physically wrong with him or anything blocking food intake.

Hey hun....my Egg is doing the I don't wanna eat on my own either as well as one I had bout from a pet store
however the one thing that worked with the pet store buy who's now eating on her own was a rat fuzzy presented with gerbil bedding hit right away second feeding was a mouse hopper her choice (unscented) and this last one a rat fuzzy (unscented) as far as es.gg well still working on his butt lol but coming along don't give up though