I have already filed but realized I have tuition available to transfer to another individual. Will that carry over. I also forgot to include a T4A. Should I refile ?

Yes, if you have things you need to change or add, you can ReFile your return. Just remember to wait for your Notice Of Assessment first.

Your unused tuition will carry forward to future years, but you will only be able to transfer it this year. You can't transfer tuition carried forward from previous years.