'Urgent- Schedule' help?

Lisa
My little girl is 19 weeks this week, ebf. She weighs around 10 1/2lb - although small docs are happy with weight she s just slow and steady and following the 2nd centile line.
My question is- the frequency of her feeds is driving me mad over the last say 6 weeks. She sleeps theough at night without waking for around 11 hours (i know how lucky i am dont worry!) but its during the day that is the problem. She will be wabting to be fed every hour, 2 hours max and its kinda making life awkward with planning meal times for us etc!  In my head it was ok up until this week as i figured that she needs to make up the feeds she misses during the night. But the last week or so ive been timing feedings and ive noticed that she often only feeds for about 5 mins (apart from in morning 1st feed when super hungry). I dont think she is nursing for comfort i literally think she is just 'snacking' all day rather than getting all full meal. How can i get us out of this habit and onto a more even feeding routine? (P.s i always make sure to start on breast she had last to make sure she gets hind milk)