Is the breast feed milk is sufficient for baby along with outside solids. Or milk supplement is also needed? I am unsure if he is getting enough bf milk

A. Babies who aren't getting enough milk will have low energy. Baby regularly will sleep 4 or more hours at a time. Baby takes too little or too much time at the breast. A baby who is not feeding well may fall asleep shortly after beginning to feed, or may take longer than 30-40 minutes per feed.