How can I correct my self employment income amount? I can't find any way to do so.

Here’s how to edit your Form T2125 if you're using TurboTax Online:

Click on “Self-Employment” under the Income tab.

Click “Continue” on the ‘Let's look at your self-employment income and expenses’ page.

Click “Edit” next to the business you want to work with.

You can also click on the “Find” icon in the top right and search for “Self”. Select “Self-Employment” and then click the “Go” button.