I've never tried OO, but my hair hated cocoanut oil so OO would probably be worse.

Here's a suggestion that may help being overconditioned. Use (eek!) a mild sulfate shampoo. Follow with a good protein treatment like Curl Junkie Repair me and if necessary a light conditioner. The CJ Repair me is a protein treatment that doesn't make your hair dry like protein treatments can do.

As an alternative, buy Nexxus Emergencee (any drugstore has it - protein treatment) which requires that you shampoo it out afterward and then use a rich conditioner that doesn't have OO.

My hair gets frizzy and limp if it's overconditioned so that's how I fix it. I'd love an update to know how you fixed your problem. Good luck Kayjayess!
2/c and some 3A.
Protein sensitive but can use occasionally
Highly porous. Color over grey.
Best 1st day method: Super Soaker
Stylers: Mix Curls in a Bottle into everything for shine. Terrible pj
Sometimes try roller sets - classic glamor but I prefer my curls.
Every day is a gift