I would say you need to start weekly PT's and at least weekly DT's. (one right after the PT is usually good, since protein can be drying for some.)
If you are shampooing every other wash, I'd suggest doing it even less, of possible. If you are CG or even mod-cg, co-wash as much as possible, and/or try a sulfate free poo.
I think you need as much protein as your hair can take, and tons of moisture.
They will start to come back! It will just take some babying.
2c/3a/3b, Fine/med, Dense, high porous, & normal elas.
Lo-poo - Renpure Keratin, SMR, Giovanni SaS
clarifying - mix Johnson's H2T with low poo
Co-wash - Suave Nats. clar. or coco.
RO - GVPCB, Ion Eff. Care, TN.
LI - SMR, Cure Care, or RO
Seal - MO or Jojoba
DT - + honey, ACV, & EVOO to SM masque & GVPCB
PT - Gelatin!, CNPF
Styling - FSG, AIF, BRHG, LALS/PS, GF curl spray gel, SM Souffle/Smoothie, LOOB
Oils - MO!, EVOO, jojoba, GSO, SM Elixer, EVCO, VO5 Hairdressing