Post-op pain management: Any advice?

So, I had shoulder arthroscopy surgery yesterday morning, and they’re already sending me home today. The instructions they gave me for managing the pain are basically this: for the first 3-4 days, take Percocet 4x2 tablets, OxyContin 10 mg 2x1 tablets, and Ibuprofen 600 mg 3x1 tablet, then just as needed after that. Does that actually mean I’m supposed to be popping 13 pills a day for the first four days? Because honestly, that sounds like a massive overkill to me. Thanks in advance.