DS has always been a big heavy boy, but not overweight as he's also very tall.
he's was following a nice line since 4 months old and leveled out at 2yo.
I weigh him about once a month and the last time was 5 weeks ago. He was 21kg. I weighed him this morning and he weighed 17.9kg.
I always weigh him on an empty stomach first thing in the morning.
He still eats normal and is not extra active, just his usual hyper activeness.
Should I be worried?