My son was 1.15 kg when he was prematurely born at 27 weeks plus one day. He stayed at hospital for 2 months and gained the weight for discharge back home. Now he has been born for more than 7 months. Everythin seems fine to him but this can only be confirmed when he is 2 year old. Let me know who need assistance in taking care of prematurely born baby. Lots of experience to share.