Car seat transition infant to convertible

Cristina • Mother of a 4 years old boy and mo/di twin girls 1 yo 😓😓😓

Do any of you have made the transition from infant car seat to convertible? I’m about to buy a chicco air zip. We are using the infant Graco Snugride and we loved it, it does attach to the stroller with just one click but my baby’s legs to long. The reason I am going to buy Chicco air is because my baby sweats a lot had eczema in his back and this car seat supposed to have babies back well ventilated.

The question is how do you transfer your sleeping baby from convertible car seat to a stroller?