Welcome @timforrest, I don't have any experience to share with morphine or it's side effects but searching Connect I found comments from other members that may be helpful while you wait for members to respond. Here's a link to the members comments - https://connect.mayoclinic.org/search/?search=tapering+off+morphine.

Here is some information from Mayo Clinic on tapering off of morphine and other opioids - https://www.mayoclinic.org/diseases-conditions/prescription-drug-abuse/in-depth/tapering-off-opioids-when-and-how/art-20386036.

Have you discussed your symptoms with your doctor to see if you might be tapering off to fast?