Online Access to 2020 and 2021 Returns

Seems like I can access Online Turbo Tax for the years 2021 and earlier but not for 2019 and 2020.

Question:

1. Is there a way I can access these years?

2. I would like to ensure that we captured the following for a dependent under 18:

Does dependent qualify for disability tax credit: yes

How much for childcare for disabled parent under tell us about your dependent when DTC eligible is selected.

Did the dependant live with you in 2023?
Was the dependant mentally or physically infirm?
If the dependant was mentally or physically infirm describe the nature of infirmity
Does dependnent depend on others for assistance in personal care because of a prolonged and indefinite physical or mental impairment?
Do you wish to make the claim for the disability amount transferred from dependent?

For the employment expenses I want to check that Lines 1, 2, 12 are added up correctly and entered for the GST rebate.