Balik loob sa pagpump

Naffrustrate ako pag nakadirect latch saken si baby (nagiging fussy sya pag dumedede sakin) kaya I decided na magpump na lang. Balak ko sana i-pure bf na ulit si baby kase he's currently on mixed feeding. Now naka-100ml ako(50ml on each side). Any tips po on how to increase milk supply except of course sa unlilatch, sabaw, tubig, etc.? #FTM