My baby also does not sleep after feeding. He needs someone to hug him or play with him for an hour. If he feels tired, he becomes irritable and crying aloud. Then I know that is the time to let him sleep on his bed. I only pat him softly and he fall to sleep. If he is too tired, it may take more time to soothe him. Sometimes he cries more loudly after I put him on the bed, then I will count the time. Most often, he cries less loudly within 5 mins and then falls to sleep. You may count the time when your baby cry. You may find that time flying so slow when your baby cry. That is my experience to share with you.