How to know if baby getting enough breastfeeding?!

La

So I have been breastfeeding my son for 10 months now and I feel like we are at a stand still with weight gain. I can physically hear him chugging so I know he’s getting something but he hasn’t gained any weight since our last check up.

So my question is have any of you started supplementing due to similar issues?

We are doing solids but I don’t think I’m doing enough. He often doesn’t chew the food enough and chokes so he stresses me out with feeding him. Also what are some good ideas of finger foods you’re feeding your babies??