hihi, dont feel worried or stressed that will affect milk supply. You could have less milk when you pump because you generally feel more stressed, just let baby latch if you can, latching is the best way of going through growth spurts. I have 2 child and both was demand feed, I do not time the feeds or intervals in between. Remember at this age, it is still too early for them to feed at regular intervals. Milk output through expressing is never a good sign of your milk production volumes. If can go on "nursing holiday" skip expressing for a day or two and just latch on 100%, I feel this helps with increasing milk supply and good for bonding too.