Ya, for co-washing conditioners I would recommend Yes to carrots. It was to heavy as a co-wash for me, but since I guess your hair is 3b (I'm a wavy so to much moisture is a problem) and you don't like volume it would work.
rocking 2c waves with 3a bangs (on a good day)

Modified CG

Low-poo: Yes to Carrots (contains Sodium Coco Sulfate A.K.A. SLS), Live Clean Volumizing
Co-Wash: Suave Naturals
Rinse-out Condish: Yes to Carrots
DT and PT: IAgirl's PT, Enjoy Hair Mask (A-cone)
Stylers: Joico Curl Defining Cream/Gel, Joico Joiwhip, He Body Envy Gel, He Tousle Me Softly Mousse, Boticelli Babes FSG, DIY sea salt spray

I my difuser