So I’d like to get everyone’s opinion on this. My grandma says my sons to young for a highchair. But…

So I’d like to get everyone’s opinion on this. My grandma says my sons to young for a highchair. But he’s a supported sitter I figured I’d get him that instead of the chairs that you can buckle the baby’s into. I feel that I’d get more use out of it. What do you lady’s think? Keep in mind he’s only 3 months old.