Hi Debbie! Babies are HARD to photograph, especially as they get a little older and more mobile. And babies at that age always have their hands in their mouth! I really love my 50mm 1.8 lens for portraits – it doesn’t zoom in or out, meaning you just have to move yourself to get a closer (or further away) photo, but it lets in tons of light and does a great job blurring the background. It’s around $100, so it’s very reasonable for a nicer lens.
When styling a photo session, I like to start out with a basic color palette and go from there. It can help to have one “rock star” in the photos who carries a pattern in their outfit that the rest of the group’s clothing or accessories pulls from, while keeping everyone else’s outfits more simple. You can do this with a neutral and a few colorful brights, or try a softer palette that has different tonal ranges of the same shades.