I am literally sweating.. I am very sorry this has happened to both of you.. ☹
Your husbandry is looking okay to me.
Just to make it clear, he is lacking his tongue completely? Or just a little bit has fallen out?
If he is totally missing it out, let the wound heal first. Of course he's not...
Guessing you are from US? If you would be in UK, I would recommend Arcadia Earht Pro-A. It is safe to use at every feed for any animal needing calcium. Cannot be overdose, and that is a legit promise.
I once again could be a ghost here but..
Yeah that would be the first thing I would do, and go back to that vet and do a blood test to check if that actually is gout or not.
I also could be stupid like hecc but that could be some infection? Since he does that to both of his hinds now?
Also...
I meant that if the animal would want to move up higher, he would. To get more UV surely. If owner would want to make their enclousure something like: some space between branches and plants withing the light. It wouldn't really matter as, the animal can move either higher or lower to self...
1. Measure lenght of the cage
2. Contact the seller that sells the light and get to know sizes
3. Get the size that fits the cage....
Also, the higher wattage is the more power the light requires. It does nothing to the light. Brightness and UVB & A output is literally the same. How hard can...
If you want the light to be fit along with entire lenght of your chams cage then take the 22 or 34" etc. If you are unsure of its lenght, I'd suggest contacting its seller