I’m going to go against some of what has already been said. Sorry guys. Love you all.

But…
I think
@elizaann2 is maybe copying some of my habits of reading too fast and/or not being caffeinated enough.

Your supplements and schedule for them are perfect. The ReptiVite with D3 is both multivitamin and D3.
When you say ambient temp is as low as 68, when, where and how are you measuring that? I can’t imagine that with a basking temp of near to 90, the temp just a couple of feet down would be as low as 68. Yes btw, basking temp should be around 85.
I don’t feel like handling him just a few times a month is too much either.
I do think it’s is correct that your healthy young man is having some urges to find a pretty young lady. Every cell in his body is desperately telling him that he must procreate asap. It is normal for adult males to patrol their territory (enclosure) several times daily, but now he’s on a mission.
The only suggestions I have are to be careful that he doesn’t escape and to think about doubling his territory.
https://chameleonacademy.com/double-wide-chameleon-cage-project/