When I was in having my second bub, there was another woman on the ward who had just had hers out and she had an 8 or a 10wk old and was over on our side so she could have help with looking after him etc. The cousin of one of my friends had hers out when her little one was 12wks old. It certainly is doable, but the BF can be tricky because you have to fast and are nil by mouth and you know how thirsty you get when BFing!