Getting tax credits for education completed in previous years
Hello, I am a temporary resident in Canada. I have completed my education in 2017 and 2018 in Canadian College. I reported my taxes in 2019 and 2020 but didn't claim for any tuition tax credits. Is it still possible to claim it now? Should I try to change my return for 2020 with including my tuition expenses? (got t2202 for 2017 and 2018). Thanks!