I'm honestly not too sure how long it should take before he starts eating being in a new environment but I would think it's getting close to the point where you may need to hand feed him.
I certainly wouldn't force feed him unless you've tried everything else you possibly can. Forcefeeding is extremely stressful on an animal and should only be done after all other solutions have been exhausted.
I've used mashed up repcal pellets with a bit of calcium in a syringe and fed my little guy when he wouldn't eat. Just mash up some pellets so they're nice and watery and put them into a feeding syringe. Place a small amount on the beardies shout and he should begin to lap it up. If it's been a while since he's had water he's probably also dehydrated. Make the solution on the watery side and use pedialyte or gatorade instead of water. Instead of pellets I've also used Kaytee baby parrot food and have read people also use chicken baby food.
I'd be realllllly careful with superworms. They are hard for a little guy to digest and it's best to try some other things first. Plus, you can't necessarily go by the age of the beardie with supers you have to go by the size as it is the size that dictates the size of the digestion tract. I think the minimum length recommended for supers is 10" nose to tail. If you must try superworms make sure you give only one or two and also make sure it's very light in color. Freshly molted supers are almost white. It's the shell that's hard for the beardies to digest.
Oh yeah, you may want to take a fecal into your local vet to see how bad his parasitic load is. Usually it's heightened a bit from stress from moving but sometimes it can get way over a safe level and needs to be dealt with by meds and a strict cleaning routine.
Good luck!!
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Rob