I appreciate all the advice. I have done quite a lot of reading and feel that cold turkey weaning is not best for our horses. It can cause behavioral issues down the road. As to gelding the colt will be gelded in October or November when he reaches 8 months. My vet will not geld in summer months when the flys are this bad and they have been really bad this season. He does not cry out and or act bad when Mom is in the round pen by herself. He just runs off to bug the other horses LOL or at times will run off all by himself. I want to keep encouraging his independence and confidence and I feel taking his Dam away completely would hinder that. He really loves the other mare Willow who does not put up with his nincompoopery so he is learning respect from her and I appreciate that. In our situation putting his Dam in the roundpen would be best and she is not bothered by it terribly. Especially at feeding time so she can eat all she wants with no distraction. The new mare I bought came to me underweight so this also helps allow her to eat since my Mare Star (dam of the colt) will always run her off the hay. I will try a few hours per day in the round pen for Star and see how it goes. The colt eats hay and grain really well so he should be asking for less of her but like some said he may just keep nursing if she lets him. We do not breed horses so this is a one time deal for sure. I am looking into some feeds that may keep weight on her as we get through this. I guess most people plan to sell babies born on their farms so things are done with this in mind. This was a surprise baby for us and I can't see letting him go now that we have him. He makes the Fantastic 4 so we are good!