Yes, how your hair feels when wet can tell you whether you are over-proteined. The signs to look for are if your hair feels rough and straw-like. If so, it's likely time to drop the protein and up the moisture.
Medium/coarse, low porosity, dense, mix of 3s
CG (again) since Nov. 2012

Cleanse: SM Moisture Retention, Elucence MBC, KC Come Clean
Condish: Giovanni DL, Cure Care, Ion Treatment, GVP Balm, AOHR
Stylers: KCCC, SM Souffle, AOMM, SS CEJ, JCRR, JCCC

Trying out steaming!