[Routine Help] IS MY ROUTINE RIGHT?

I’m 19 and planning to incorporate 0.1% Retinol from ‘Good Molecules’

My Routine right now is basically just the same above but without the Retinol. is 3 days interval enough for Retinol? or can I also use retinol during Exfoliation day? (I only use Salicylic Acid Cleanser as an Exfoliator)