We started giving DD some solids around 5 mos, but it was a very laid back blw kind of thing. Literally we would say, i wonder what she would do with this... It was more like a new way to play with her, not a way to get calories in. Ie sliced cucumber, rib bone, cracker, rice... Whatever we were eating we would give her some, with zero expectation that she would actually ingest anything. She was clearly interested and had the motor control etc.
It was fun but once we got the first non ebf poops i realized we should have waited if only for selfish reasons :-p