10.5 months and refusing certain solid foods

My little guy has been eating true solid foods for a while now, and recently we switched entirely from purées for breakfast to things like waffles, eggs, pancakes, oatmeal, etc. It went great the first time he had eggs and pancakes, but now he gets his mouth full of food and just won't swallow it. He just cries with his mouth full of food and I have to either wait until he finally swallows and stops whining, or swipe my finger in his mouth and take out everything he's got in there. The past two days I've had to give him just purée again because he simply won't eat what I'm making for him. But he still eats his snacks of cheerios, grapes, cheese, or whatever else I give. It's just been breakfast when he doesn't want to eat solid food. Any advice?