It would be worth going over your notes and keeping refreshed on the theory subjects. A number of airlines will ask questions or test on the theory subjects to see if an individual has retained the information of kept up to date. Even some students on cadet programs have completed training and still failed at the subsequent interview stage. Some students refesh by using question banks. It's the sort of business that you can't just learn and dump, a lot of the info will be useable in the future.