1-1.5 days to hang dry a gi is pretty normal. ESPECIALLY if it's anything over a single weave.
If you're worried about your gi not hang-drying quickly enough indoors, stick a fan in front of it. That'll make it dry a lot faster.
And if you absolutely can't hang it, and you absolutely must use the dryer, just put it on the setting that doesn't use heat at all. There's usually a cold air ("blow") setting on most dryers. That's probably your safest bet.