My mare is on short grass with hay at night. I am feeding her stud mix, alpha and sugarbeet at night (not a lot) She has always been good at keeping weight on so until she was due to foal I fed her lo-cal. Foalie is 11 weeks now and mum hasnt dropped a pound since birth. Do you think I should drop the stud mix and put her back on a feed balancer and if so which one? Worried she is going to get too fat