Neither of mine held their own bottles. One was pincer grasp expert by 7 months, the other at 5 months when we started solids. Only criteria for feeding solids is good head and neck control, and their tongue thrust reflex if gone, which is why 6 months is the recommendation for solids. I've never read anything about not giving solids if they won't hold their bottle. You will need to encourage and help them feed when you start, and probably have to put things in their mouth, they won't just know. But the longer you wait the more likely they will have feeding issues later.
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