it sounds like your situation has changed, and without a supportive network around you you are wondering how you will cope. That;s only natural! Have you joined the Australian Breastfeeding Association yet? Their Breastfeeding Education Classes are fabulous - and gaining a deeper understanding of how the situation works really helps. Also, they provide a supportive network of mums in our area.
Having 3 kids is a juggle, but many of us look at bottle feeding mums and wonder how that can work with 3 kids. At least when you breastfeed (after the early tricky weeks) you have a hand free. And pretty soon you find yourself walking around the house, babe on boob dispensing food and drink with one hand! And it’s so portable when you need to get the kids out of the house on those hot summer days where everyone is going a bit stir crazy in the heat. As for work - well, cross that bridge when you come to it, but most mums find that they can work and still keep a breastfeeding relationship going.