4 months and waking up every 2 hours

So my LO is 4 months, and he is waking up like every 2 hours to eat and it's been weeks since he started to do this. Also the last couple nights we had him in the bed because its getting cold and now he will cry when he is in the crib. I'm breastfeeding. I was thinking to try to give him a bottle at night but I'm not sure if that is going to help. What can I do?