I have three 3-year-old babydoll southdowns (2 ewes and 1 wether). The vet says they are all overweight. They are on good pasture during the day in the warm months and get 2 flakes of grass hay at night. In the winter, I feed 2 flakes of hay in the day and 2 at night. They get a few handfulls of grain to share among themselves once a day. I use the grain to entice them in from the pasture. I didn't think their feeding was excessive, but clearly they are larger than they ought to be. I would like to get them to a healthier body condition without compromising their nutrition. Any suggestions?