my son will be 7 weeks old this tuesday and all this week he hasn’t been eating as good as usual. he usually finishes a 3.5-4oz bottle and lately he’s been eating like 2-3oz and it takes forever to get him to finish. granted, he has been nursing more often in between bottles but not for long periods of time (maybe 5-10 minutes). he has plenty of wet/dirty diapers and seems fine otherwise. is this a growth spurt? i’m not sure when to worry about how much he’s eating and would like to avoid a doctor visit right now