new brb not acting right

[miya]

so ive had my brb for maybe 2mnths possibly less but since i got him hes moved around alot and been very active...he started shedding about a week or so ago and started scratching his head on everything in his tank he finished shedding and is still scratching but has also stopped moving around his tank and doesnt soak anymore in his water, i actually had to resort to poking him repeatedly just to get him to move....not sure what i should do or if i should just give it more time