My DS is 6 weeks old and we are using Dr Browns bottles with Level 1 teats. I think they are too slow as hes taking ages to feed. I tried him on Level 2 and he hoovered the bottle. He didn't choke, was a bit more drobbly than usual but then projectile vomited! I have heard of variflow teats- not sure if these would help? I know Dr Brown doesn't do them-Is there teat by another brand that would fit Dr Brown bottles? Any other suggestions?