It depends.

Constant week to week use can just fuck with your head and thinking, almost like a trip bleeding into soberity. More potential that you could shatter your ego. Week to week isn't all that bad in comparsion, I heard of people who trip far more frequently, and they become total headfucks. You'll also feel out of it all the time. I'm not saying do it once for two weeks in a row would do it, but over a far longer period.

If I were you, I'd save those 2 hits for a month then do it. I'd rather do a high amount of acid once in a while, than do little bits frequently.