Should I enter my income earned before I arrived in Canada in 2022?

Yes, you have to enter the income earned in the US as CRA wants to know about your world gross income. It boils down to whether you get a full year or is it prorated from your date of entry. You will not be taxed twice on your income from home, under the tax treaty Canada has with USA, as it is taxed at source, you will file for Foreign Tax Credit. 

In the online version, the Foreign Tax Credit is found under the "Deductions" tab - "Payments Profile" - "Foreign Tax Credit":

The T1135 form, which can be found under the "Income" tab - "Other Income Sources" - "T1135" - will be filled out too if you have Foreign Property over $100,000 in US. 

• T1135 Tax Form: Foreign Income Verification

For more detailed information on non-residents please refer to the links provided below from the CRA & TurboTax:

CRA: Non-Residents and Income Tax 2022

From TurboTax:

• Tax Filing Tips for Newcomers to Canada
• Foreign Income and Tax Treaties
• The Federal Foreign Tax Credit
• Taxation for Non-Residents

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