My employer paid cpa fees but I had to reimburse them when I left for another job. Can I claim these expenses now? How?

My previous employer paid all my fees for the last two years for the courses to become a CPA.  I received T2202A slips, but did not enter them in 2015 or 2016 returns as I had been compensated by my employer.  I left my employer in late 2017 for another job and had to pay back the majority of the CPA fees.  Can I now claim the fees I had to pay back to my employer?  How do I do this?