Help ease my mind

My daughter was born small even though she was on time she was petite well now I’m pregnant with a boy and as of today 29+2 he’s measuring big in the 65% doctor says he will weigh at least 7 lbs at 39 weeks. I’m kind of scared because I’m not sure how big he’ll be or if he’s gonna fit in new born clothes that kind of thing considering my daughter was tiny at 6lbs 8 oz so please someone help ease my mind because I feel like I’m gonna give birth to a giant and I’m freaking out