DS not gaining enough weight

[bobgoblin123]

DS2 is ebf and the hv has told me he isn't gaining enough weight. He's 4 months old and has dropped 2 percentiles. DS does tend to only feed from one side so maybe that's the issue? I breastfed DD to 7 months with no issues. Has anyone else had this problem?

This could be normal for your ds. A drop of two centile spaces is within normal limits. Easiest thing to do is just to start offering both sides. Then weigh after a couple of weeks - check this suggestion with Hv though.