Should you go full ‘P’s get degrees’ or try and approach Step 3 like you did Step 1?
The answer is usually something in the middle. If you are looking to do a competitive fellowship or scraped by on Step1/2, it would be a great chance to add one last sparkle onto your resume. Go through UW with a fine-toothed comb and approach it like CK. The nice thing is nobody tries on Step, so the curve is friendlier by comparison.
Otherwise, if your scores were anywhere near the top of the bell curve for Step 1 / CK I suggest doing a light pass through UWorld and the CCS Case(R)’s. Do a UWSA (expect to get crushed by the curve) and collect your Pass!