I have a 6 year old warm blood in medium work 4 times week . He is currently out grazing 6x7pm later if weather is nice and I bring him in and he has his benvit vitamins, fast fibre, pasture mix (small amount) adlib hay in stable. He is of good weight now but want to make sure he doesn't get over weight. He isn't that interested in his hay overnight will usually eat half his net. Should I reduce his hard feed to just vitamins and fast fibre? If I leave him out Full time should I still hard feed so he gets his vitamins ? Should I also be feeding him a balancer? My boy is really healthy so please no nasty comments I'm after some advice so I do the best for him.