Baby weight gain at 37 wks is 2.7kg, is this normal?

I’m currently at 37 wks and baby is about currently 2.7kg, my husband felt i had not been eating more in the past feel weeks and blames me for the drop in baby weight, he felt the normal weight should have at least been 2.9-3kg by now. It makes me feel guilty that i have not been more, though doctor did advise this is still within normal range. What can I do to increase baby weight especially now i’m already at full term? #firsttimemom