Can i smoke weed? My baby is 1 year old. I breast feed only at night.

It’s been close to two years now that i haven’t smoked weed. Was wondering if i can smoke once and probably skip breastfeeding for one night, will it still affect my baby next day. I got out of conflicting views online. Some say it stays in your system for 10 days and can affect brain development. Please be honest. Also sources will help. Thanks.