Fit check… baby bjorn infant

Asking for a fit check please… she is 9 weeks 9lbs and I am still terrified to baby wear after being told babies chin can’t touch their chest or they are suffocating. How is everyone letting their babies sleep in carriers? How can you know for sure they are safe? My partner is back at work and she won’t be put down but I need to eat and clean/sterilize bottles. Help please 💙