How many times a day is s/he eating them?
When did you increase from once to twice a day? Or when do you plan to?
We are planning to start solids around 5 months. (a few more weeks, as I'm seeing her show her readiness cues.) With my son, I fed him a breakfast and an afternoon meal. Both about 45-60 minutes after taking a bottle. Usually only a tablespoon here and there to start.