Baby started gulping during feeds.

[Shazzy]

Hi my little one has started gulping her feed on the bottle, (she is bottle and breast fed atm, and 10 weeks) we never had this problem until recently. It gets so bad and she is suffering from terrible winds.I've tried different positions feeding her, sitting in a quiet place, stop starting feed every 50mls for a burp and nothing seems to work. And it is not all the time, occasionally she has no trouble drinking at all esp during sleepy feeds in the wee hours of the morning.

Any suggestions hints?