6 month old suddenly eating less formula

She has been formula fed on kendamil since birth. From about 4 months, she would consistently eat around 30-32oz per day and now we struggle to get her 24. During feeding, she will start moving a lot of start talking like she can't focus. We started feeding her solids (just a tiny bit) too, but I don't know if that could have so much of an impact.

She still poops and pees great, no fever, happy, etc. She just doesn't like to relax and eat like she used to and it seems like she just wants to talk/play or something.

Anyone go through something similar?