Have you searched the forums beforehand? I’ve seen at least a couple of posts about it in the past week alone. If you have the time to combine the pieces of information here and there I’m certain you’ll be successful.
Also, I’ll link my answer from another post here because I think using ViteJs today is the pit of success for Phoenix 1.6 (coming from Webpack), see if that helps: Bootstrap 5 and scss usage in Phoenix 1.6 - #4 by thiagomajesk.
