estimated fetal weight (hadlock)

last feb 19, 2020, 19weeks po ako nung huling ultrasound ko & est fetal weight ay 259 grams siya. then yesterday po (May 8 2020), 30weeks & 5days, i had my CAS. est fetal weight: hadlock na nya is 1526 grams which is 1.5kg. sakto lang po ba ung weight niya? hindi ba sobra or kulang? thankyou.