Hey man, your current situation was very similar to mine when I started out just over 12 months ago. You maybe style yours differently to how I do but the characteristics of your hair look very similar to how mine where. I began to notice cosmetic change around 6-8 months in.
Hope you get the results you are looking for. It is never an easy ride and you can be feeling good about things one day and pretty sh*t the next but just keep with the treatments and the good will get to a stage where it outweights the bad.
Good luck and one final thing to add which may help if you are a frequent washer. In the past I would wash and blow dry my air probably 8-10 a week (overkill & fried alive). I now only wash 3 max 4 times a week. My hair quality has improved, not much snapping etc...