new boa dehydrated?

[Kaity]

2 weeks ago i purchased a young (not quite 3 years) male bci. he appears dehydrated - i noticed folding skin when he curls up, which was not there when i purchased him - and seems to be having trouble shedding, despite adequate humidity and a couple of soakings. could it be that he is not drinking? he has easy access to clean water, but has not left his hide box since the beginning of his shed cycle. should i place a water bowl in his hide?

thanks so much!