Your on a pretty hefty amount of Lithium 450 .... 4 times a day ????

Doses that high should be checked routinely via blood work.

" most pdocs taper off Seroquil but in the past I have gone out it with out a hiccup.

Out of your meds I agree that your tremor is lithium as previously mentioned by all of the above members.

I'm glad you are finally getting help even if there are lots of kinks to work out to find stability.