I wouldn't start learning now btw but there are a few things you can do to prepare for example look up the specification and edit it to make it more shorter and more to the point, this will save you time when you are closer to your exams and you can just use it as a checklist. Also make cards for all the reagents and conditions you need to know that way you can just go over them before tests and not waste time making them again. Do you know what exam board you're doing for chemistry?