breastfeeding

I've been feeding my daughter 100% breast milk for 3 months now... but my supply is slowly starting to go down although I haven't changed anything from what I was doing before.. It's just going away... I'm curious how long other moms breastfed before switching to formula... is 3 months pretty long or not really? I was hoping to make it to 6 but I don't think that's going to happen! Lol