Do you mean put away the Qbank or not use the tests. Because I am not sure if you've used the Qbank, but alot of the questions reflect what is in the OG.
I mean I've had situations where I've learned from mistakes I've made in the Qbank and had something similar thrown at me in the OG.
So I absolutely recommend you try to cross reference both Qbank and the OG. By the way someone that I am in contact with to this day, who I met through the this forum, congratulated me personally a few days after he got a 700 on his GMAT, because I introduced him to the Qbank.
In fact, I spoke with him not to long ago and he told to use my
error log and say active on the Qbank.