Hello.... My daughter is fast approaching 2 an...

Hello.... My daughter is fast approaching 2 and it is at this time that I thought I would wean her completely from breast milk. At the moment she only has breast milk when going to bed but it is really getting into a habit for her and I think she uses it more for comfort than a drink as she has cows milk and water at all other times. I feel really bad giving it up but I think she is getting a bit old for breast milk once she turns two. I have been proud to have breastfed her this long and think it is getting time to stop. How do I do this without upsetting her?? Please help!