I can't say as reviewing one's husbandry is ever a bad idea. Quite the contrary. But it can also lead to someone feeling that they need to find something that is wrong, and therefore label somehting as wrong, and make a change. Again, it becomes a cycle of "something is broke, and so I am going to fix something", to put a different viewing angle on the old adage.
Just a for-instance. We feel that we pioneered some of the cause-effect in real vitamin A vs. pre-formed vitamin A here in years past. We were able to see differences in animals in quantity between use of the two as Vitamin A sources. Never was the "wobbles" a symptom observed in animals deficient in Vitamin A, and there certainly were observable symptoms of other things. Likewise as earlier stated regarding the use of fish flakes. Likewise with UVB, as animals in direct sunlight their entire life developed our version (or versions) of the "wobbles".
The bottom line, in your situation, is that you have no practical recourse except vet work, and with a competent reptile vet at that. You certainly have plenty of impractical, or at least less expensive, recourses. It may self-correct over time. And it may not. You could spend $200 and find out nothing of value in fixing the situation. And then again, you might get a boatload of actionable information.
I can respect that:
Bottom line is that I don't want him to die before I get a chance to take him to the vet.
But I also think it safe to assume that we all want likewise both for your animal(s) as well as our own, and in my most arrogant voice, "How does it feel to want?" What you want, what you are told, and how you act on it may not give you the option of doing anything except seeing a good vet, and to think that you had any other choice may be to make assumptions that are not prudent to the health of your animal. I wish that I or Dr. I or someone else could have told you that the magic bullet cure was $1 at any drugstore. Not yet anyway. If you opt for a vet, hopefully you can ask around and find one capable of running full diagnostics on a reptile, as many lack the machinery or support items to do so. To be completely honest, I would not fault you in the least if you judged it not worth the cost. I make that judgement all the time. Good luck.