This is my first time milking my two and a half yo.ff nubens.They both seem to be loosing weight.I feed them two flakes of good quality alfalfa a day to share and three cops of four way grain each.I also give each of them half a pound of chaffhay a day. they are on a weekly herbal wormer.Should I be feeding more? If so more of what?We don't realy have any place for them to browse. I am milking once a day and getting just under a quart each. Is that an ok amount? Thanks!!