20 days old baby refuses to sleep after drinking milk and keeps sucking on the nipple to fall asleep why?

The 20-day baby refuses to sleep after drinking milk and keeps sucking on the nipple to fall asleep may be caused by the baby not eating enough, habit, insecurity and other reasons.
1. the baby is not full: if the mother’s milk is not enough, resulting in the baby can not take in enough breast milk, may appear 20 days after the baby refused to sleep after drinking milk has been sucking on the nipple to fall asleep.
2. Habits: If the baby appears to suck the nipple for a long time, it may have developed the habit of licking and playing.
3. Insecurity: It may be because the smell, temperature, noise and other factors in the surrounding environment make the baby feel nervous and insecure. And when breastfeeding can make the baby relax, so the above situation may occur.
If there is a situation that the 20-day-old baby refuses to go to sleep after drinking milk and keeps sucking on the nipple to fall asleep, it is recommended to consult a doctor in time, complete the relevant examinations, clarify the cause of the disease, and treat the cause of the disease.