Re: Slow weight gain
Excellent advice from the PPs. I just want to point out that co-sleeping on a couch or other upholstered furniture is the least safe form of co-sleeping. When you're sleeping on a couch, it is very easy for a baby to slip into a gap between cushions and smother; in fact, many of the deaths chalked up to co-sleeping are actually due to this extremely unsafe form of co-sleeping. A lot of moms choose to co-sleep on couches or chairs because they assume it's bed-sharing that is unsafe, not realizing that bed-sharing is safer then couch- or chair-sharing. If you are going to co-sleep, there are plenty of safety checklists to look at, so I'd recommend a little googling as you make decisions about your sleep setup.
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!"