My 2nd dd2 is only 5 days old, breast feeding going ok although I don't enjoy it but I guess not a lot of people do in this early stage when breasts are engorged and nipples are sore. I am sure I will be going on to formula at some point, I only managed 5 weeks breast feeding with dds1. When is a good time to start and how? ideally I would like to give half formula half breast. Can anyone recommend how to go about doing this?