[routine help] Is prescription strength Azelaic Acid worth it vs OTC in your opinion?

I am tolerating Tazarotene very well and want to add another active to help acne/rosacea.

Do I need to work my way up to 15% or 20% from an OTC strength, or can I jump right in? Also is it worth it- never tried but seeing great reviews.

Bonus points if you can recommend one from Skinorac.

Thanks!