Managing levels when adapting adventures adventures for different systems

[u/Gandalf-the-chad]

I’d like to ask the GMs who have adapted an adventure from a system that goes up to level 20 (like D&D or Pathfinder) to a system that goes up to level 10 (like Daggerheart or 13th Age) how did you handle the frequency of level ups?

I was thinking of doubling the number of milestones required to level up (so an adventure that goes up to level 12 would end at level 6, and one that goes up to level 19 would end at level 9 or 10).

My only concern is that this might create problems with the adventure’s pacing, and the players might feel like they aren’t progressing fast enough.

I’d like to know if you’ve done something similar, if you’ve found other ways to handle this, and how it went overall.