How to layer ‘Isntree HYA water essence’ along side Azelaic acid in AM routine ?

At night: cleanse > hydrating watery toner > wait > Taz

In the morning: cleanse > layer hydrating watery toners > ha > numbuzin.2 serum > moisturiser

After a 2 week break I want to restart my Aza(finacea 15%) in my AM routine…where would I place it in my current AM routine ❓

History: I was using Aza daily for 2months before I had to drop it to reset my barrier/irritation. I loved what Aza did for me - helped keep my skin smooth with it’s light exfoliation action and cleared hyperpigmentation and so I desperately want it back in my routine… BUT will I get the same effects if used ‘long term’ every-other-day VS daily ❓