I found i had to cut down my DDs feeds, if i was still going to be able to continue feeding and it still be a positive experience for both of us.

Although we never had set times or circumstances for feeds, when i wanted to make changes, i thought about when i would be ok with breastfeeding her. So, it was something like after breakfast, after lunch/before a nap, after dinner. If she asked for a drink, i could say "Yep, you can have a drink after lunch" or "after your bath"... I found this easier than saying no or trying to distract constantly. i did this during pregnancy, but it really helps these days too (when i am also feeding he brother). It makes it more clear for DD too.