I am having that problem with getting bt meds also. I don't know if asking for tylenol or bute would help because of the liver enzyme increase with these drugs.
Pcp has now increased my la with another 120 mg. of morphine (Avinza) putting me at 360 mgs daily dose. This is still under what I was getting from my last pcp which was 449 mgs.
And get this when the assist went out to get the doc's approval on what to do for me, (this is my 3rd visit) he comes back in and tells me I am now receiving the highest dose opiate of any of his patients.

Really! But then he tells me I am the only patient he has that has been in pm for 10 years. So I am not opiate-naive. What planet did he fly in from? I can only imagine that he must be new to this.
I did find that keeping a diary of my pain helped. Seems like if its written down they don't miss out on any of the important things or maybe they believe your pain is really that bad. Not every little thing just hit the high spots like, what you were doing when you pain level reached 10, what your pain is at rest as opposed to activity, etc. I kept a one page report of what I have experienced in the last two weeks of this med change and handed it to him at my visit yesterday. He did read it and wrote a few things down off of it. Maybe it helped because I did get the increase in my med.