My baby is 6.5 months. We started oatmeal three weeks ago. At first she really liked it, so then we're introduced avocado, then peas. She's hated both of those, wouldn't even open her mouth. So I've gone back to oatmeal this week. She won't open her mouth for oatmeal now either. She's still on breastmilk 100% because she hasn't eaten a full tablespoon of anything. Maybe she isn't ready to try solids? I'm not sure what I'm doing wrong. Any tips?