Thanks, I'll wait longer for feeding.

No, I haven't handled him at all since he's new. I'm waiting to see that he's eating before I bother handling. Just changing his water and leaving him alone for the rest of the day.

I don't have a blow dryer though, I put the rat in a plastic bag and submerged it in hot water to warm it up. The blow dryer would probably be better though, I'll have to pick one up.