Yes, putting the crate in your bedroom is definitely a good idea! I think that maybe you should still leave him the crate when your gone, until you can trust him more. Is there anything in the garage that he could get into and hurt him? Puppies get into E V E R Y T H I N G! lol.

My puppy (now 5 months old, 8 weeks when I got him) is potty trained...he only had one accident in his crate, dogs don't normally like to "go" there. He still sleeps in a crate in my room at night, and is left in an outside dog run while I'm at work during the day.