Saw a good trick for shaky hands mentioned a while back and mentally filed it away for possible future use -
Use something like a sling for a broken arm etc, pass it behind your neck and wrap the loose ends round your wrist and tie them off when the hand is at the correct level and under tension for coiling, wicking, bottle filling etc.
Pushing against the tension of the sling stops the tremors.
Wasn't able to verify the tremors bit but it steadied my hand nicely.
Hope this works for tremors !
Kudos to the OP.