Shizzy
A BP is very susceptable and cranky when in the shedding process. Their skin is fragile, and they most likely will refuse food and not want to be handled until the process is complete. It's not an uncommon thing.

Don't overdo the humidity. Keeping it between 50-70% should work well. You should soak them after they have attempted to shed and there is a lot stuck. When you soak them, you have to work the shed off immediately with a nice terry cloth towel, otherwise the stuck shed will become harder for them to remove by themselves if you just soak and put them back in the enclosure.

Kare
When misting the enclosure, aim at the corners and around the side of the tank or tub. This prevents them from sitting on a wet spot, and will also keep the humidity up without having to soak the substrate.

If your animal is unable to even move to drink, it probably won't do a good job of shedding. Be prepared for that.
If the animal is clearly supposed to be shedding, the scales are crinkly and dry, perhaps take him to the vet regardless.

A healthy BP is alert, acknowledges us when we open their enclosure. The tongue flicks very often. They can hold their head steady, and move fluently to where they are directing themselves.

If your BP has very little or minimal tongue flicking, wheezing, drool he may be very sick, and you need to take him to the vet immediately.

If you are able to, hold his head gentle from behind, and pull down on his the skin under his jaw. When you open his mouth, it should be clean, and a light pink color. There should be NO bubbles or mucous. If this is present, he definitely has an URI, and a treatment for bacteria is necessary.

Ask for a CULTURE from the vet so you two will know right from the get go what strain of bacteria or virus your are dealing with.

It has been recommended here that the injections have better success than the oral doses. Ask the Vet if they will do that as well.

I hope you can get him to the vet as soon as possible.