My little guy is 10 1/2 wks old and today his soft spot appears a bit sunken. I have been told (by formula feeders) that this means a baby is not getting enough food. I highly doubt this is the case as he feeds consistently when I am home, I pump 3-4 oz 2 times while I am at work (6 hours total including commute). I know he is draining the breast because he has solved a clogged duct issue that my pump was unable to. He has been gaining steadily and adequately. I am taking him to the dr for a weight check on Friday (my own paranoia) but is there anything else that can be causing this?