Re: Not a big eater
My pediatrician would say you're doing just fine. Until around age 1, breastmilk (or formula) should be the baby's primary food source, and breastmilk (or formula) alone are sufficient to meet all the baby's nutritional needs. until the first birthday, solids are just for fun. You want your baby to taste new tastes and experiment with different textures and motor skills. Actually eating the solids doesn't become important until the baby is around 1 year old, and the transition from needing only mama's milk to needing a ton of solids is a gradual one, with many babies eating very little solid food well into their second year.
If your kid doesn't like being spoon-fed, definitely experiment with BLS! That's what we had to do, because DD1 would not take anything off a spoon. She would just bat the spoon away, splattering solids all over the floor/wall.
Coolest thing my big girl said recently: "How can you tell the world is moving when you are standing on it?"
Coolest thing my little girl sang recently: "I love dat one-two pupples!"