Welcome to the forum.
I am assuming you have already done tests to establish your AeT/AnT and your AeT is not within 10% of AnT (ADS).
My strategy this week has been to monitor my HR, and take walk breaks whenever I enter Z3, and then resume running when I get to Z1. HR graph attached. is this a recommended strategy until I can run for 45 minutes w/out walk breaks, or is there something better?
Yes, most people with ADS start out doing this and eventually you see an improvement in AeT/Pace and be able to run within Z2.