Routine for 2 different textures

Hi everyone! So I’m in a bit of a predicament- the top layer of my head (like if you were to draw a line from ear to ear I’m talking about the hair above that line) has more of a 2b/2c defined wave texture and is thinner, while the hair below that is definitely 3A and forms in ringlets and is denser. I’ve tried creams and gels but sometimes they are too heavy and just end up totally straightening my top layer (and when I try to scrunch them to get them to match the bottom layer they never get to the root) or they’re too light and don’t give me the moisture the lower curls need. Does anyone have any advice or product recommendations? My hair is overall fine, sensitive to protein and heat, and I cannot use products with Rosemary due to an allergy. Thank you!!

My current routine: Dae detox shampoo (I get crazy build up) Moroccan oil conditioner NTM curl cream Moroccan oil Air dry