My son is 5.5 mo old. I just talked to the LC and sh suggested starting solids.
He can sit unassisted (on something soft) and in he highchair.
I put him down on a plastic sheet last night for tummy time with mashed carrots. He definitely likes the flavor. I was surprised that some of it actually got in his tummy. But he was sucking on my finger and the bowl - so I really don't know if he's ready?