One big mistake new hires make in training is not partnering up in a study group. You don't know what you don't know. If you try to study by yourself, you will miss areas that you didn't know you were weak on.

Start on memory items and limitations as soon as you get your a/c assignment. Learn your profiles to the point you can recite them forward/backwards and start in the middle.

When practicing callouts and flows, add a second activity to the drill. You fly the same way. Balance a marble in the center of a glass plate while walking around the room while making calls. Get a deck of cards and play solitare while reciting calls and flows. Anything to engage your mind with two tasks at once.