I give my guys just a BIT of wet in the morning - 1/8 can of Royal Canin S/O split in half...helps the digestion and gives them a treat.

Maybe you could just keep a bit in his diet when he regains weight? Just get a good quality wet, and it can last a long time if you just feed once a day.

GOOD news on Taz...he'll be a plumper baby before you know it!