You don't want to make the $1,300 go away, or zero it out, until you ask a lot of questions. How much of the $1,300 is taxable? Self-employment income? Personal sales of personal goods at a loss? Transfers from family/friends for personal activities?
As Slippery said, you don't get to not report $1,300 or any amount below $5,000 (or below $600 if receiving Form 1099-NEC, for example). You report worldwide income unless the law excludes it. So you have to ask your client to break out the $1,300 into the amounts from various income categories to determine if and how much you can exclude.
Each software will have different ways to enter. You know what to do with biz income. The new instructions for Schedule 1 explain about Other Income and income that can be excluded.