I never went that long trying to dry up my supply, but I weaned cold turkey because cutting/moving times for me meant infection every time I dropped down past 3 pumps!
Have you tried anything else to dry up
Sorry to hear that weaning has been so hard for you.
Looks like you are ready to just stop pumping at this point. I weaned about a month and half back and my last pump was after a 36 hour gap
"Life is what happens, while you are busy making plans."~ John Lennon ~