SS is a (great) novice program. It requires you to add poundage at every session.
If you are still adding weight/reps to major lifts in your 5/3/1 at every workout (linear progression), then you might find quicker progress switching to SS.
If your progress requires adding weight less often, which indicates the linear progression of SS might have run out, then I would be looking to stay with 531 or a different intermediate program like HLM or other.