Employer Paid Tuition in 2019. Returned a portion of the reimbursement when I left the company. How should I include this in 2020 tax?

My employer paid $8,866.91 for tuition in 2019. I left the company in early 2020, before meeting 1-year stay requirement. They took my last 2 paychecks away. Below is the breakdown. 

 

#1 check

- Income is $1,455.77. Company deducted $180.39 for taxes. Company took back $961.80. The rest of check went to insurance, etc. 

 

#2 check

- Income is $2,785.61. Company deducted $559.10 for taxes. Company took back $2,226.51.

 

I was told to try amending 2019 taxes and enter the same info in 2020 tax (haven't file 2020 tax yet) to see which one is more beneficial. But I'm not sure where I can enter the $3189 that the company took back in 2019 tax amendment. I looked at the area to enter 1098T and the "tuition and enrollment fees" box is already pre-filled with last year's amount and grayed out. I'm not able to enter anything. I'm not sure if I should make changes to 1098T form, as turbo tax's advise is to fill it out as it is shown on the form even if it is wrong.

 

Similarly, where should I enter $3189 on 2020 tax?