Babies tend to get frustrated if they do not get the milk supply they want and sleeping when nursing is a good indication of this. (momdiscuss.com)
How to help: While tactics like gentle massage, heat, hand expression or pumping can help get milk flowing before feedings, they won't resolve an underlying issue. (carolinaparent.com)
These pumps work at the right speed to help get your milk supply back up to the right level. (checkpregnancy.com)