I can relate to that.
My routine with two horses in a small paddock and a run in shed:
Mornings it's raking all old hay together in a pile, give grain(not really grain tho), then give hay, after I weighed the nets with the leftovers, then I clean the run in, put the leftover hay in there for bedding, go pick poop, and get the lunch hay and grain portion ready. Approximately. 40 minutes.
At lunch I feed, pick the poops while I fill up water and get the nets ready for evening. 15 minutes.
In the evening its just giving grain, hang the nets and pick the poop...another 15 minutes.
If you think a little and split up the chores, you'll have time to ride