Your hair may have liked the protein before because it was being damaged by straightening, but since you stopped you may not need that protein.

For a gel I would recommend Aussie instant freeze or Pantene Curl Shaping gel, both are protein free and CG.

For a deep conditioner, i like Generic Value Products Conditioning Balm from Sally's. Sometimes I add honey to it to make it more moisturizing.

For a leave in, I would use whatever conditioner you are currently using, so long as it does not have drying alcohols in it or other "bad' ingredients.

Also, to lock in moisture, a lot of people seal their hair using a rich product or oil. This could help keep your hair moisturized on day two.
3a/3b, Low porosity, Medium Density
Low-poo: Shea Moisture Moisture Retention
RO: Matrix Biolage Conditioning Balm
Leave-in: Kinky-Curly Knot Today
Styler: Aussie Instant Freeze or LALSG