HELP! I have just started using Dr Browns bottles for very windy baby. He is on Aptamil confort formula but cant seem to get any out of the teat, I have tried number 1 and 2 (he is only 4 weeks old) - should I be on number 3 ie 6 months plus? Or how about the y teat for this formula? He has been getting on great so far with tommee tipee variflow but the actual colic relief bottles in this brand dont help.
Thanks