Amina Inloes, Amina Inloes is originally from the US and has a PhD in Islamic Studies from the University of Exeter on Shi'a hadith. She is the program leader for the MA Islamic Studies program at the... Answered 1 year ago
It is good to use the time to have a solid grounding in the Qur'an (memorizing the Qur'an and studying it). Also, if Arabic is not your language, studying Arabic. It is usually easier to do these things while younger. Beyond that, study whatever is available to you (there are online programs these days) and practise the religion as much as possible, both in terms of the required practices and also ethics.
I am sure some others may have some advice also.
Best wishes!