Attribute increases have many variables (WE, playing time, starts, practice time and potential). Usually (for me) it takes about 3 games before I see meaningful improvement for any players I am actively trying to increase. Regardless of the variables, attributes ARE increasing...although they may not be showing up in the amounts that you desire (which may make you review all sorts of things you are doing...practice time, playing time and so forth...even how you recruit).
nitros