How big are your minis? Feed should be by weight; basic rule of thumb is 1.5-2% of bodyweight daily, so 250# mini would get 3.75-5# forage daily. Are you soaking the pellets? Pellets don't have to be soaked, but it is recommended. Cubes are often a better choice, as they provide some long stem forage, but they have to be soaked to reduce the chance of choke. There are several brands of chopped forages available these days, and even some small compressed bales; I realize they two options usually cost more than pellets or cubes, but they provide more chew time and don't necessarily need to be soaked, so would be a nice inclusion to the diet. Baled hay is replaced pound for pound with pellets, cubes or chop; having a small scale in the feed room in these situations can be very helpful. You can also use some soaked beet pulp in the diet, it can be up to like 30% of the diet, but if using over about 1/3# for minis, you need to balance the high calcium (the one thing nice about beet pulp, if they like, a little dry makes a pretty big soaked meal, so they feel more full; but still need to measure the amount dry when figuring how much of the daily diet it is)