Try adding back some conditioner to your high porosity canopy, and overnight soaks with a penetrating oil focussed on the most damaged/ porous sections only.

My dyed hair (red) is in way better shape than when I started practising CG/ LHC haircare methods but still can take an incredible amount of leave in conditioner. A true conditioner is rich in the major emollients (fatty alcohols/ cationic surfactants) - these primarily soften hair.
2a-2c, medium texture, porous/ colour treated. Three years CG. Past bra strap length heading for waist.

CO-wash: Inecto coconut/ Elvive Volume Collagen
Treatments: Komaza Care Matani, coconut/ sweet almond/ fractionated coconut oils, Hairveda Sitrinillah
Leave in: Fructis Sleek & Shine (old), Gliss Ultimate Volume, various Elvive
Styler: Umberto Giannini jelly, Au Naturale styling gelee
Flour sack towel, pixie diffuse or air dry.
Experimenting with: benign neglect