My dd is almost 3 weeks old and now she's having a bit more milk she's started tiring half way through her feed. We were using tommee tippee number 1 teats and they looked like they were too slow for her so were tiring her out. We've swapped to TT variflow, some feeds she takes really well but others she spits and dribbles loads of it as if its coming out too fast. She's used the variflow teats for 2 days, is it just a case of her getting used to them or has anyone got any better ideas for her feeds?