I've got a new one the sleeps all the time too. I wake him up to handle him every day and feed him a treat afterwards as a reward. I was actually very worried about the time he spends sleeping and took him to the vet who gave him a completely clean bill of health and says he is just a lazy hamster.
He is the only one I have who sleeps quite as much as that, which is why I was worried. Perhaps you've got a similar one. I would wake him up and start taming him.
Welcome to the forum and congratulations on your new hammie
