@daver
Compounding pharmacists can make tailored dosages for medications. You need a prescription and this service can be pricey and may not be covered by insurance. A commenter on another site who was getting off Ativan used Johnson Compounding and Wellness in Waltham, MA.

Since 2014, a Dutch medical charity, called Cinderella Therapeutics, together with Maastricht University creates personalized "tapering kits,” with precisely weighed out tablets in labelled packets that gradually reduce over several months. There are tapering kits for 24 different medications so far. Most of these were for people in the Netherlands, but a few kits have been sent to other countries.
https://www.cinderella-tx.org/en/
http://www.taperingstrip.org/