I don't know why $150 of ordinary dividends would require an upgrade. Are there Section 199A dividends in box 5 of the 1099-DIV? That requires a form that is not included in Free Edition. Or there might be something else that you're not recognizing as requiring an upgrade.
If your child's 2022 Adjusted Gross Income (AGI) is $73,000 or less, see if you can file for free using IRS Free File.
