M.M.
Keep giving him actual food, he's hungry! :)
I had both of my kids on cereal/stage 1s by 12 weeks. They're little chunkers that needed more than formula.
They're both healthy as can be and never had any issues. (Jeez, my mom had ME on rice cereal at 6 weeks!) Watch for allergies, if you have a family history of them. Otherwise, let them dig in!
The bit about needing to be 6mos for food now is ridiculous.