This question already has an answer here:
This question just came up and I had marked it as a duplicate. However, the comment thread has brought it to a point that I'm not sure it still is or how to handle it or similar questions.
It's clear that the question is 100% contained in the currently linked duplicate, but the answers also don't satisfy the current querent about the specific concern of generating more than the existing spell slots.
Should we clarify the new question to only be about the specific concern and link the older question as relevant, or is this more about getting a better answer to the older?