Strong let down- mucusy poo?

Ka

We have been trying to figure out why my 8 wk old has mucus in her poop for awhile now. We had her tested for a milk/soy allergy and it came back as a trace. So I cut out dairy and soy about 5 weeks ago.. but we still have mucusy diapers.

I’m wondering if it may be caused by a strong let down? Maybe she’s getting too much foremilk?