4m ebf when to start foods

Ok so WIC says don't give baby anything til 6m or after...

Doc office has a few ped. Few nurses... Half say wait til 6m... Others said 4m. Maybe 2 says anywhere between 4-6m and 1 was horrified on waiting til 6m said that's way too late. And few said to skip cereal and start with a runny veggie or mix half a jar with some breast milk...Cereal box says 4m or 13lbs and able to sit with support and hold head up....

So when should you start feeding baby anything other than breast milk (i tend to nurse til least 1yr old) Have you had any issues?

My baby girl was born may 12th, 2018. She rolls she sleeps on her side (turns by herself) scoots! And can sit by herself un supported for a few mins before falling over. At her 2m check up they said everything she is doing is that of a 4m old. Today at her 4m checkup they said shes more advanced than alot of 6m old esp how well she sits and isnt wobbly by herself.