I have about a 4 month old albino pacman frog, and he has been doing very well up until about 2 weeks ago. he stopped eating by himself, so I was gently assisting him by opening his mouth and placing the dubia roach inside, and then he'd swallow it on his own. I would only feed him about one bug a day like this, sometimes maybe two.

just a couple days ago I dug him up from the substrate and he was very stiff, with his legs out as if he was paralyzed and he wasn't moving. I gently touched his sides and rubbed him a bit and he did wake up and return his legs to normal. my first thought was that maybe he could be impacted, so I started to give him slightly warm soaks daily. yesterday, he made a pretty decent sized poop in his enclosure, and was acting a lot better in terms of behavior, he was moving about more and no more stiffness.

but then today I dug him up as usual for feeding time and he was even stiffer than before, his legs were stuck straight out like he couldn't moved them and his eyes were shut. I honestly thought he was dead and I was about to cry. I gently spritzed him with water and he woke back up again and eventually put his legs back to normal.

I don't think this is normal behavior and I'm getting very worried for him, any input is helpful but I honestly think I might need to take him to a vet. I just wanted to get some opinions on it first.

info about his enclosure:
temps are 70-80 F
humidity is around 60-70%, I mist him twice a day, one morning one night
he's got a water dish though he doesn't seem to use it very often, I don't use tap water AT ALL for him
substrate is eco earth, there's a good few inches for him to bury in
I have some spaghnum moss in the enclosure to help keep humidity, but I don't feed him in the enclosure so I don't think he's eaten any moss
I received him from a breeder in Florida named Alfredo, I looked up things about him and nobody seemed to have any complaints from what I saw

edit:
I don't know if it's relevant at all but I do have two american toads in my home as well. I've had them for years now