No. If he was 19 at the end of 2020 then for you to claim, you would have had to pay more that half of his total support for 2020 AND his gross income had to be less the $4,300. It sounds like your services supported him, not you.
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**
