How Early is Too Early and How Late is Too Late?

<p>So, I am retaking Bio M and Math II in November. I wanted to know how early is too early to start studying, since I don’t want to forget everything, and how late is too late, since I also do not want to be cramming.</p>

<p>Help, please?</p>

<p>I’d start studying in the beginning of september. And finish the whole book a couple weeks before the test and take those couple of weeks to study everything and test yourself.</p>

<p>Okay, thank you!</p>