Help mamas

New mama over here. 1 year old has begun to get picky with solids. He loves all fruit....some veggies....whole wheat crackers...veggie pasta....cheese... He is not interested in meat. He will throw it on the floor. Is this ok? Does he need to eat everything i put in front of him? Do i continue to do this in hopes he will begin to eat it? I just want him to keep gaining healthy weight. He seems to not want to be in high chair.

I am also having a hard time weaning him. He has been exclusively breastfed. He wants the boob all day everyday. I am an army wife. No family nearby and husband works. I do not know how to do this.