Hi there,
Baby is going through a growth spurt. This will last from 2-3 days to a week or so. In the first 3 months, baby will be doing lots of growing so some fussiness is to be expected.
Further, baby will cluster feed during this period.
Sadly, I’m not very experienced in formula feeding but I found a few articles which may help:
https://www.healthhub.sg/live-healthy/1195/baby-time-to-unwind
https://www.babycentre.co.uk/a25012755/does-my-baby-need-more-milk-during-a-growth-spurt
Anonymous