@veronicaplr Explore the lillebaby before you go buy anything else as you have it already. You can always buy it later.
Your mum can manage the lillebaby with minimal practice.
@peteranastasio It's knees, not feet you check for the M position. Babies are free to move their feet where they want.
Unless your baby has hip problems already messing up the M position is not a safety issue.