Watery BM followed by normal slightly loose stools and flatulence

I’ve been having loose stools for quite some time, decided to cut black coffee it’s been 18 days, on the first 16 days my BM got slightly better, but yesterday it was just water and today it’s water followed with normal consistency. Should I try cutting of milk as well? My daily meals consist of veggies, fruits, soups and minimal gluten.