D.S.
He may just be going through a stage. My little one also refused the bottle for a little while, though she rarely got one so maybe she just wasn't used to it. Then, when I tried again she took it just fine. As a previous poster said, he won't starve, but probably just adjust his schedule a bit. If he's been sleeping through the night he may start waking up again to make up for less daytime feeding (called reverse cycling) but if that's a problem for you, you could try giving him a last feed before you go to sleep so you hopefully won't be woken up. In any case, give the bottle a rest for a bit, then try it again and see what happens. Enjoy the opportunity to breastfeed while you're still with him full time!
Good luck!