I've tried feeding squash to my daughter on 2 separate occasions. The first time we tried it, she drank a bit less that day (only approx 3oz less for those first 3 days). Both my husband and I thought that maybe it upset her stomach.
So, I waited and approx. 1 month later I tried squash again, and lo and behold, same thing. Drank 3oz less those days then normal.
Could it be that it doesn't agree with her (upsetting her stomach) or is it just a coincidence. I thought I read that squash was one of the least allergenic, but I guess it's not really an allergy, much like some foods upset adults stomachs.