I don't have any tax slips (ex. T-?) as I was on Long Term Disability for 2021, can I file my taxes without any?

You can file the taxes as having no income.

Here are the few steps you can consider while filing online TurboTax:

When you start to file your tax return, you will be asked if you had any income to report. 

Please follow these steps to file your tax return without income:

• First, you would have to start from the beginning, answer all the questions correctly.
• Please note that after the question "Let's import your information from the CRA", you will be asked, "Do you have the income to report?" - click on continue without income to proceed with your tax return without declaring any income. 

For additional information please refer to TurboTax links:

• Benefits of filing a return even if you have no income to report  
• How do I file a zero-income tax return? Video instructions 

Thank you for choosing TurboTax.