Don't do it unless you know a whole lot of people who will buy from you on a regular basis. It may be home-based but very time consuming. Canvassing, getting customers, calls, getting orders, making deliveries, etc.
Do what your heart tells you. If it's nursing all the way then strive for it and you'll make it and prove them wrong. Remember that you are doing this for you and your child's future. Save some money if you can and try to move out but don't do it if ...