TMI! Dairy Allergy Poop?

Je

My babies poop started off seedy and then after about 6 weeks she started having more liquid like poop every other day. She will be 10 weeks tomorrow

…We were sick at the time it started so I just correlated it to that. Doc said to see if it works out if her system. But it seems to still be liquid like. I am nursing and supplementing with formula when I have to.

If it is a dairy allergy do you have to completely cut out dairy or just lactose??