I don't know what products you are using but if your hair is fine you need protein to strengthen it. A good protein treatment like Nexxus Emergencee left on for 1-2 minutes once a week for a while might help.

I never wore any protective styling after my hair started to grow out, I still don't. I haven't experienced any breakage either.
3b spirals, fine texture, normal porosity, dense
Deva Low Poo
Suave Naturals Coconut for detangling
Renpure Organics conditioner/leave-in
Homemade FSG
Curl Junkie Stuff

Nothing lasts, nothing is finished, and nothing is perfect.