Mainly learn what are sign of good breastfeeding . 1.baby should sleep atheist 1 hour. 2.baby should pass urine 4 to 5 times in a day . 3.baby should gain weight daily . 4.passing stools . If all this are present no need to worry about whether milk is sufficient or not. From all this above one more thing is mainly you should be confident and your family members should encourage. Let baby should be always with you and make the sure baby is contact with you skin ,it will help to increase the milk production. You can express the milk and see how much it is coming.

Medicines are not going to increase the flow of the milk Milk production is psychological reflex, so attachment to the babies more important Take good quantity of the water in a day Do meditation if possible

More details are required regarding the age of baby, technique of feeding and latching. You can include garlic and Fenugreek in your diet. Fish consumption also helps .

Try to take high protein diet First of all don't get stress of it Try to give feeding more in the night which increases milk production