I honestly don't remember any reactions coming off the seroquel but then, maybe that's because that whole period of my life was a black hole. It was one of the few meds that my pdoc put me on after the trauma I went through with the home care person when my mom was dying of cancer 10. I was having such bad nightmares that I couldn't sleep & none of the benzo's even touched the mess I was in on top of the anorexia that I ended up in the medical hospital with.
My pdoc actually had me on 600mg of seroquel at night so I could sleep & I was pretty much useless all day even though I would end up at the ranch with my filly who was by then 6 months old. I had so many things going on with me at the time, I don't think I would have known what was causing what. I actually stayed on the seroquel for almost 2 years but had slowly lowered the dose so I could function a little bit more. It wasn't until I finally left my H 2 years later that I stopped taking the seroquel all together & just went to taking the EPA omega 3 fish oil at 1800mg/day.
I already had bad migraines that were being handled by a high dose of pain medication. I was living in a completely NEW place 2100 miles away from where I had lived & I felt sore places where I had injured myself in the past but blamed that on the higher humidity......then the hot flashes hit but that was a normal thing for my age.
One thing I did find that totally amazed me because my brain was totally mush by that point also from everything I'd been living around for so many years & then add the trauma on top of that. I remember trying to express myself & couldn't find the right word.....was really getting frustrated but after taking the Omega 3's with the EPA being for the depression mostly & the DHA just because it was in the fish oil....one of the first things I did after moving here was join the book club at the library. Why???? I have no idea but I read the first book & went to the discussion & was able to talk about what I had read

.....I had never been able to do that before IN MY WHOLE LIFE......so there was something seriously good about not taking the seroquel (or any meds) & the fish oil Omega 3....helped the depression & my mind to think more clear.....& the fact that I was no longer living with my H after 33 years in that bad marriage.......the combination I'm sure was what helped.....but I would strongly suggest the Omega 3 for the memory while you are lowering the seroquel. As I said, I don't remember side effects like you said....but had so many things going on at the same time not sure I would have realized it if I did.
But honestly I think it's worth going off of but that's from my own personal experience. I love having the clear head where there is NOTHING that interferes with my ability to think clearly.
Oh the driving....I can so relate. The first year after my mother died, I was having horrible flashbacks to it all & my pdoc had me go into PHP since I refused to go into the psych hospital. I was driving home that first day & got into 2 rear end accidents within 30 minutes of each other in the massive California traffic....& I was the one who rear ended the cars in front of me....part, I was struggling with depersonalization at the time also. I had to make arrangements for being picked up with a van from then on because I realized I really couldn't drive & definitely NOT on that amount of meds....but I was still so messed up that I needed them to sleep.
I love being finally in a place in my life where I'm free from all of that. It's totally worth it IMO.