Re: I want to stop stressing about supply
Here's a pat on the back for you. It sounds like you have done an awesome job nursing a distracted baby. You did a lot more work with pumping and co-sleeping and frequent nursing than most moms are willing to do- and that all may have been extra work that you didn't really need to do, KWIM?
Re the kellymom recommendation, there's no way my kid's diet was 25% solids at 12 months because at that age she was so not into solids. And she did just fine. And there are other babies who eat tons more solids at 12 months and do just fine, as well. I wouldn't be at all worried about increasing the amount of solids you're offering if your child seems eager for them.
Coolest thing my big girl said recently: "How can you tell the world is moving when you are standing on it?"
Coolest thing my little girl sang recently: "I love dat one-two pupples!"