DS2 is 4 weeks now, and has just today regained his birthweight (he started at 6lb 7oz/ 2950kg and is today 3kg). He has been a v slow gainer and I have been trying v hard to get my latch right to ensure he gets max amount of milk at each feed. Think I may have a bit of a low supply, as have had a stressful few weeks- in and out of hosp for first two weeks etc. Midwife suggested expressing some milk and giving it to him as a top up. I'm just wondering when I would give him this top up? At the end of a feed, or as a separate feed all together? Any suggestions would be great- thanks!