It’s suggested to hold a baby up to a 37lbs..
https://www.babylist.com/gp/4moms-connect-high-chair/23327/984889
Not what you were asking, but my son prefers to eat at our counter standing up on toddler tower. That could be something else you try.
Fast Table Chair - Black - https://www.babylist.com/gp/-/4677/7444 I put this on my registry haven’t been able to try it yet (my baby due in March) but you can also get the attachable tray too.