What kind of solids have you tried? My lil one is a greedy guts and shoves food into her mouth. But if it's something she doesn't like she will just refuse and not open her mouth.

Have you tried putting some puree on your finger and letting him suck it off? That's what we do when we introduce a new flavour that she isn't quite sure of. Once she decides she likes it she'll eat it off a spoon.

Another thing we do is not put the spoon right in her mouth. We put it onto her lips (maybe put a tiny bit into her mouth) and she then sucks it of (kinda like slurping soup). That way she controls the food rather than it being imposed on her. Also make sure she's not tired, too hungry, upset etc (easier said than done I know).

Sorry you're going through this.