I started just once a day as he is learning what food is if still hungry prioritizing milk then offer more food throughout the day I do mashed food/baby led for my 1st I did purée but a lot of issues for us as he grew up that was my experience
I give my munchkin a purée once a day with a bottle of breast milk.
Following!
You can feee your baby however you like! My baby is almost 5 months and I feed him oatmeal for breakfast and he has a 4oz bottle after that and then I feed him a puree for lunch
I don’t feed him dinner much yet I just give him a bottle because he typically sleeps after 6-730 and doesn’t wake again until the next morning
Once a day about 30 minutes before his bottle. We also do BM and formula. I am doing stage 1 purées. (Peas, carrots,pumpkin and sweet potatoes)
We do baby led weaning so it might be a bit different but we offer food during regular meal times (breakfast, lunch, and dinner) and he eats what he wants, or not.