Breastfeeding to sleep bad for long term sleep habits? Comments please!

I breastfeed my 11 week old to sleep currently. It’s just so easy, it’s like a sedative and she sleeps really well. Obviously it’s not great that I’m the only one who can get her to sleep. I mean she will sleep in the pram or car seat and my husband can use a dummy but it’s not the same. Anyway it’s working for us because she is sleeping so well, but I’m wondering if this will be a problem long term when I go back to work or once she hits the 4 month sleep regression? Does anyone have any experience with this and weaning baby off it? Thanks!