Now my baby is 3 weeks old

Today my baby is 3 weeks old. He looks fatter and more chubby than when the first time I saw him. He also looks healthier now and I am very happy for it. He drinks more milk than he used to. Now he can drink more than 100ml of milk at once. But, sometimes he just drink 60ml of milk. My baby usually drinks milk every one to three hours. Usually after my husband and I bath him, my baby will sleep longer than he usually sleeps. He can sleep for three hours. He usually just sleep for one hour to two hour before he cries because he wants to drink milk again.