Had a horrible experience with DS1....'poor' weight gain, formula 'top-ups', fully ff at 9 months after going on a nursing strike, mastitis.
DS2 was a dream in comparison; he was ebf for 7 months and self weaned at 18.5 months. He was a 'poor' gainer again, but because I had been here before knew that formula wasn't liable to help and was likely to jeopardise our bf relationship; he was happy, healthy and all signs pointed to him getting enough milk. I had mastitis in week 2 and oversupply for 9ish months (usually only lasts 8-12 weeks) but we worked through all that.
I had NO clue about bf, especially about how it worked when DS1 was born...all I knew was that I was doing it, even though it was not the 'norm' for me as, I only knew ONE person in my whole life who bf. I did A LOT of reading when DS1 prematurely weaned and I had a lot more knowledge when we decided to add to our family than I did when we were pregnant the first time.
Kellymom was my 'bible' and I consulted it a lot, even second time round. Essentially though I was a lot more realistic in my expectations, and so didn't fall into a lot of the 'traps' I did first time round. I did what was necessary, trusted my body (and my baby) and only ever really had doubts once or twice. I basically took all the pressure off..I didn't have to love it all the time, if I was frustrated about something I could say something; that didn't mean I wanted to stop bf, just that was I was feeling/experiencing was fairly 'normal' and if I wanted to work through it I could...so I did. <span class="emoticon smile">smile</span>