Your dragon looks much better and happier than in your previous post!
UVB
What type of
uvb light are you using? This is an extremely important part of their daily lives. I prefer to use a long tube type uvb source like the Reptisun 10.0 T5 HO. The coil type compact uvb bulbs, (from what I have read) lack sufficient uvb coverage and are bad for their eyes, causing eye irritation, infections and/or blindness. I don't take chances when it comes to my dragons health.
BASKING
His basking temps should be between 95° to 100° for his age. Basking temps are yet another intricate part of the life of your dragon. Proper temps allow for proper digestion digestion and, I'll provide good heat gradients across the in closure if positioned correctly. Warm end (on the floor era) under his basking spot (which should be elevated) the temp should be around 95°+/- 2°. The cool end should be around 80° +/- 3°. These are not written in stone, these are what I have come up with from the research I have done.
SUBSTRATE
I prefer to use something solid that cannot be ingested by my dragon. Loose substrates can cause impaction, which in turn can cause paralysis and death. I recommend rough textured floor tiles, nonadhesive shelf liner, paper towels or newsprint.
NIGHT NIGHT TIME
They prefer it to be cool (around 70° to 75°) and dark. No light emitting heat source, it disturbs their sleep patterns and won't let their metabolism slow down enough to actually rest. If you house temps drop below 65° at night you can use a ceramic heat emitter "CHE" to keep the over night temps up.
I say these things not to say you are doing anything wrong but, as advise to help if you are confused.