What weight should a baby be around at 10-12 months? We were always a…

What weight should a baby be around at 10-12 months? We were always around 4600 and gained normally, but for the last two months we've been gaining 200-300 grams... Everyone around us is saying he's skinny, weighs little, like... We weigh 9800 now. A friend says her daughter weighed 12 kg at 10 months old... They say I should feed him more, it's unpleasant to feel they think I'm not feeding him (we eat three times a day + formula). Not that we're small, no, he's not chubby, he's normal body type, why