I'm having a huge amount of trouble feeding two of my mares. Honey is 10 years old this year and nursing her second foal. I fed her tons of food while she was pregnant and she was fine after she foaled, but she seems to have gotten worse. Her filly is okay. I can't tell if Honey is skinny exactly or if her topline is just gone because she's a dwarf. Bow is eight years old and just weaned her HUGE colt, her fourth. He took a lot of her weight from nursing. I can feel her ribs, spine, and her hips are protruding. I feel horrible about it. She was let out into the pasture regularly, fed grain, given hay, and she's like this. She's also due in April for a foal. I have Honey and Bow together for now, with the smaller horses (foals), instead of with the horses their size. So there's no competition. So, I'm feeding them half a bale of grass hay with soybeans in it (my dad's making me, as he cut it), Enrich 32/oats/crushed corn (again, I'm made to feed the corn), and they're let out into the pasture for eight hours a day. What should I do? What should I change?