Yes, in chronic pain management, immediate release format for drugs is not used except for breakthru pain. Severe pain, like yours, Blaine would really need extended action opiates, if opiates are decided upon, with things like Percocet to be used only for breakthru.

Long acting products are recommended and can lower pain levels more efficiently. If you have been on these high doses of Percocet for a while now, months, you might be a candidate for fentanyl patches. These can be very effective, more so than immediate frequent use of other opiates. Fentanyl is not for new patients who are opiate naive however. Fentanyl is used later in treatment protocols. Also long acting methadone works for some others but has to be evaluated carefully to make sure the patient does not have cardiac issues called "long QT syndrome".

Seeking pain management, is really important here, with your severe pain issues. That can be managed better, I think.