Hello dr. my grand son now 8 months old uncorrected age, as he was born preterm twins, baby girl was lost in a weeks time , he survived, he was in hospital for 3 months and discharged, during this period had done stomach surgery for stomach bulging and found nothing wrong, later gone thru ROP laser surgery and recently done hernia surgery too, Alhamdulillah he is healthy now, he was born 26 week preterm, now we hv started with semi solid food along with ceralak rice , so far we are feeding mother milk plus powder milk with palada, we hv not used bottle till now, still he is not rolling over himself, he often Vomits even after burning etc, your suggestions and opinions is highly appreciated for his future....