Hello moms, I'm worried the gynecologist referred me to a specialist b…

Hello moms, I'm worried the gynecologist referred me to a specialist because she saw my baby has short limbs. I only saw it on the referral letter, she never mentioned it to me. When I went to the specialist, he told me my baby is behind by a week in her growth; she weighs 1.2kg. What can I eat to boost her growth? I'm 29 weeks pregnant.