Yes, withholding fertilizer would be one technique, as well as under-potting. It's easy to chop parts off if the appearance becomes displeasing, which leads to having more individuals, which you might want to keep or give/trade away. If you are able to share pics, you could get some feedback, per plant, about whether each is already somewhat mature or otherwise.

Some if us growing succulents don't fertilize them much anyway. Certainly less than my Houseplants I find.