I have a couple ideas, thanks for the additional info.
1. When did you get your
UVB bulb? If you bought it when you got him and you use it above a screened cage lid it's time to change it.
2. If the bulb is fine, check your temps. Off temps can contribute to changes in appetite (just like UVB).
3. How are his bowel movements? If its been awhile give him a
bath, he may be needing some fluids.
4. At 9 months he won't shed often, but there's a chance he isn't eating because he's about to shed. I'd look into the stuff above first though.
Pic of the enclosure would still be nice, unless one of the things above helps. :mrgreen: