My 4-month-old ds is constantly reaching for my food, opening his mouth, watching the food go from fork to mouth with an eager expression. He sits very well with support (rolls over and is very strong). He also reaches far forward for things in front of him, then transferring to his tummy. I know it's early but could he be ready to try solids? I know he doesn't need them, but he seems so interested! And if I do introduce them, what and how often should I give him? Thank you!!!