You will want to feed them fresh fruit and veggies daily if you can, make sure the male to female ratio is good, and make sure they are crowded, but not over crowded. You can tell if they are over crowded if the males start really nipping each other's wings. Other than that, disturb them as little as possible and wait. It sounds like yoo may have lost quite a few; discountdubias.com is the cheapest place I've seen to buy them.