The back of your hair looks very similar to mine only you have no weird clumpage.
And yes, it was probably 6 weeks of CG before I noticed any really marked improvements but it was last summer that I had my big breakthrough. Only washing and conditioning once a week by necessity made me realize I was conditioning and doing my hair too often. I'm much happier with it now and I'm closing in on 2 yrs of CG. Lots of experimentation and reading to get me here.