Baby food ready!

Our son, Jaxton, is reaching 6mo soon! His pediatrician said to start baby food at that time. I have some questions but his next appt isn't til 3/3. i know he'll still be eating formula so, Im curious as to how much baby food daily and how often? Will it replace a bottle feeding or two? Or will he need some of both at couple of feedings? If so how much? First time mom lol 😄any advice is appreciated!