I Take Oxycontin 30 Mg X 3/day And Just Became

I take Oxycontin 30 mg x 3/day and just became medicare eligible so the cost has escalated to over $200 for monthly supply. I'm trying to figure out what alternative would be my best choice. I tried oxycodone and didn't like it because it was immediate release so what to you do for the last 3-4 hours before your next dosage.