I am anxious about changing from the Fentanyl 25 mcg patches that I use once every three days and the Percocet 7.5 mg tablets I take three times a day to this Hysingla 40 mg starting after my appt with my Dr tomorrow afternoon. I am very skeptical about it lasting all day. I will have moments during the 24 hours of pain-I just know it. She seems reluctant. How do I start this conversation?