Are you kidding, Char? Those are great so don't second guess yourself or think you should be setting the lights differently. You have a good separation from highlight to shadow ... and nothing's overexposed. I think you did an outstanding job especially considering you've stated you're just learning multiple lights.
Kudo's !!! If you can come up with something reflective just prop it up above/behind the baby's head and out of picture frame. If you angle it to bounce the light back onto the top of his hair you'll have perfect separation of hair from dark background and won't need any other lights. Heck ... if you're in the kitchen just get a small bit of aluminum foil - crinkle it up - spread it out again fairly flat then prop it in place. Perfect reflector on the cheap !!!
