MRI during withdrawal?

Has anybody here had an MRI while withdrawing? I tapered down and wanted to stop completely tonight, but I’m scheduled for an MRI Sunday that I desperately need. I’m scared of getting sick or something during the MRI, it’s with contrast so I’ll have an IV as well. Never tried to quit before and wondering if I should just do it or hold tight until after the MRI. Already feeling a little iffy with the taper. Thanks in advance