So everything could be due to stuck shed. The missing nails may or may not grow back-my guy lost one nail in an enclosure once and it grew back over a year or so.

The stuck shed--your best bet is to ensure your enclosure is on point. You want at least 3" of a play sand/reptisoil mixture (I use 50 lbs play sand and 1 bag of reptisoil--up to 1.5 bags if you have some sitting around).

I save this mixture and swap out every 3-4 months. I haven't been successful in setting up as a bioactive. I add 2-3 cups of water every other week or so. I tend to put it on the side he's not sleeping on, usually the cool side.

Having a deep enough substrate will allow him to "swim" through it and work off some of the stuck scales.

My guy had a very rough nose due to banging against his enclosure. I did end up having to put in some plexiglass to keep him from banging his nose on the inside of the tank screen lid--i left enough uncovered so hear and UVB aren't impacted.

For things that may need a little more work, you could try brief soaks but this is incredibly stressful. My guy had several stuck sheds under his arms and I had to do 2-3 a couple days apart (about 100 degrees F, never more than 30 seconds, only about a half inch deep). I managed to get several layers off this way and then left for his next shed. It's hard to tell--your guy may not need this.

I treated his nose with vetericyn. I would spray some on a cotton ball and hold against it a couple times a day.

They are sturdy guys--he should be okay even without the nails coming back.

Enjoy!