
⭐
Good instinct going slow. Lithium is one of the drugs where speed really matters.
That said, your steps are on the big side. The usual guideline in tapering communities is around 10% of your current dose per reduction, not 25%. And because equal cuts get proportionally bigger as you go (600 to 450 is 25%, but 150 to 0 is 100%), the reductions should shrink as the dose gets lower. That last jump from 150 straight to 0 is where most linear tapers fall apart.
A reasonable approach: make one first cut, maybe 600 to 550 or so, and sit with it for a while to see how you respond. Some people tolerate bigger cuts fine, some don't, and you won't know which you are until you try one. Then let that inform the rest. How big your steps end up is your call, the main principles are smaller cuts at lower doses, and holding longer whenever a step feels rough. No prize for finishing on schedule.
On the liquid: you probably don't need compounding. Lithium citrate oral solution is a stock pharmacy item in a lot of countries, and a liquid plus a syringe lets you cut as small as you want once tablets run out. One caveat , carbonate and citrate aren't mg-for-mg equivalent, so have your prescriber do the conversion rather than guessing.
There is a taper planner in the side bar if you want a schedule :)
Creator of Taper Community, here to help you.