I'd like to know what's your hair history before you started trying to cut back on shampoo, like if you thermally straightened your hair and how often, if you have color-treated hair (and what color) and related to what transpogue said when was the last time you had a haircut/trim and how it was done.
A great number of curlies have more than one type of curl in their hair (just look at my nickname...) but the good news is that the more you get into true CG and also apply some of the tricks we've learned here all your hair may get curlier as time goes by. One favorite that does work is using an Epsom Salt rinse. I just re-posted a basic recipe and variations in the Recipe forum.
2A/3A, medium length, layered, colored dark/medium ash blonde - "CGer" since April '02.
"Converting the 'curlskeptics' one curly head at a time..." HWHC