My DD who is 7 weeks occaisionally gets a bottle of expressed breastmilk from other family members. When she first started with the bottle at about 4 weeks she was just fine and guzzled it with the slow flow nipple. Now I have a bit of OALD and she loves the fast flow from my breast and sometimes fusses a little between let downs when it gets slower. She has started fussing with the bottle now - I gave her one last night to see what everyone was talking about and she really does fuss with it but eventually drinks it all after fighting - and I know she is hungry because it was 3hrs since her last feeding and she was doing major hunger cues (I also used fresh pumped BM to see if the warmth made a difference which it didnt, and I know I dont have lapase). I'm not sure if its maybe because she has a boob preference right now, or if maybe the bottle is slower than my OALD and so she gets frustrated. I was thinking of maybe trying the fast flow nipple but I dont want to drown her and I dont want anything to affect our breastfeeding. But she needs to be able to take the bottle from others especially since I go back to work in a week and a half. I know you dont normally use fast flow with a BF baby or before 3 months but I'm a little stumped??