My baby just turned 2 years old but ever since we came home from the NICU WHICH WAS AT 2 weeks the longest he’s has ever slept for is 3 hours and that was once! He wakes every 2hours now or every 1.5 hrs. I know he’s still young but his first 2 weeks in the NICU he would sleep for 4 hrs and wake for his feed. Even in the day time he doesn’t sleep longest he sleeps is like 30mins-hour. He normally falls asleep for 5 mins then up again in the day. I get no time to do anything cause he always wants to be held. Any idea why? Or what could help?

Note: I do swaddle him and tried not to nothing works.