What can I do to possibly help my milk supply before having baby?

So I had a very hard time breast feeding my wonderful little girl when I had her and it wasn't her latch or anything I just wasn't producing enough..I am newly pregnant again and am wondering if there's anything I can start doing NOW during or while pregnant to possible HELP me later when I have this baby have more success breast feeding then only being able to do so for 2 months :/ .. I don't know if there are things u can do while pregnant but it's worth asking and getting some opinions :) thanks ladies!