Hi everyone, I'm in need of some advice. I have a 15 (best guess) year old desert tortoise and above ground burrow that was built according to directions via a now defunct tortoise organization in Las Vegas. (They showed a build using a plastic sheet with plywood over that, cinder blocks on top, another layer of plywood and cinder blocks on top of that, dirt in burrow and covering the top.) He burrated in late October, came out in December then went back inside and not not emerged yet... I'm very nervous and feel I should take the burrow apart to check on him. I was advised by a friend with several tortoises to wait a little longer due to our very strange winter and spring, but am scared now. Any other advice anyone?