Hi there,
My lo was born on the 12th July so is roughly the same age. He went through a phase of not wanting his bottles and would just push them away. The first thing I did was change the teats on his bottle to a faster flow, and he seemed to prefer this, but when his gums are giving him trouble - he will not drink at all.
Hopefully his teeth will be out soon - can see two little peggies trying to make their way through.
He went back to normal when his gums werent bothering him, and it is true, he will eat if he is hungry enough.
Good luck