Unfortunately that won't work, because the creators are no longer updating the tool with patches for any new games or ROM hacks--I asked them personally to confirm. The patches have to be made manually, for whatever reason. Here's the documentation for the process, I get the sense that it shouldn't be too difficult when you've written the game yourself:
https://github.com/treyturner/analogue-pocket-patches/blob/main/TUTORIAL.md
In the end, I suppose it won't matter much when Analogue releases their next firmware update, which will add filters to all the cores and in theory render .pocket files obsolete.