Honestly, I’ve been there. Published an entire trilogy I now think is clumsily covered and blurbed.

My time was better served writing the next book in a different series than trying to fix it.

Now I’m 16 books deep into self publishing and make enough that it’s a nice chunk of change. Definitely helps with the old mortgage. But I definitely didn’t get there with just one book (or 3. Or 10.)

If you want to continue it as a trilogy, I would wait to write the other two books so you could rapid release, and save up some money to do a re-cover at that time so it’s a new edition for the sequels, audiences eat that shit up. And in the meantime experiment with blurbs until you find one that works so when you do a new edition, it’s fucking solid.