A.S.
Hi A.! My son is now 7mos old and I had all the same questions you did! Here is what worked for us at that age:
6am-6oz bottle
9am-6oz bottle
about 45min later-rice cereal and stage 1 veggie or fruit
12pm -6oz bottle
3pm-6 oz bottle
7pm-Bedtime and 6oz bottle
At 6 mos we cut down his feedings to 4x day at 7oz and increased to baby food 2x day. He started slow on amount he ate and it slowly increased over time.
Also-my son was recently constipated last week for the first time since starting solids and I gave him baby jar prunes..worked like a charm!
Hope that helps