Not had too much time to work with Playdate this week but when I have it's mostly been a case of refactoring: Breaking down the UI into screen elements, separating out model and view, and switching everything across to use the Playdate OO style.
I tried Lume and found it helpful but has a few weird omissions (e.g. split but no join?)
Right now I'm going to build out some structure around the puzzles, as I want to frame it as a conversation, and I'll need an engine to support it. I'll also start to look at draw efficiency and sprites.
I'm getting tempted to try something more visually focused but holding off for now as I my attention span is my worst enemy sometimes!