When to "up" my feed proportions?
So a little history: my 20yr old appendix QH gelding Bingley was diagnosed in May with Cushing's disease and he was also laminitic at the time. We did a x-rays and luckily had no rotation in either hoof. My vet gave me some Bute to help with pain and inflammation and recommended new a new shoeing regimen. Good thing my farrier was scheduled to come out the following day! My boy was also told to eat a strict diet of grass hay.
Well, after a couple weeks on the grass hay, my boy started to drop weight. he has the Cushing's that makes him more of a hard keeper. He has always been a just right eater, never been too fat or too skinny. We were only feeding him twice daily feelings of the grass hay. So I called my vet and asked about adding a complete feed to his diet. He said to go ahead with a low starch, low sugar feed such as WellSolve L/S, but only give half of what the feeding label recommended and stay at that for some time like several weeks before upping the amount.
So right now every day my gelding is getting free choice grass hay, gets 3 pounds of Purina Wellsolve L/S, and half a pound of Max E Glo rice bran. He also gets a senior supplement for his joints and it also contains probiotics for digestion. In the 3 weeks he's been on this new regimen, he is picking up weight and starting to act like his old happy, friendly, energetic self. And he also is no longer showing signs of soreness in his feet.
But i'm wondering when and how do I add more feed and rice bran to his diet. I know I need to introduce things slowly. I can feed up to 7lbs of the Wellsolve, and 2lbs of rice bran. I don't want to add weight too fast either, but my current plan is seeming to be working. Should I up things?