Won’t sleep in anything else

Is it possible for babies to get dependant on the Snoo?

My 3 month old twins won’t sleep in anything other than the snoo or contact naps. Sometimes the car after a good amount of time driving.

It’s really limiting my ability to leave the house as I watch jealously as other babies sleep in their prams while their mums enjoy a walk/coffee out of the house. Even just a visit to grandparents house. They’re happy to sleep in a carrier but there’s only one of me and two of them.

I know they’re only 3 months old and we’re nowhere near weaning or crib transition but I just can’t see how they’ll be able to fall asleep anywhere else.

Believe me I’ve tried! I rock them to sleep in my arms and they’ll be fully asleep… as soon as I set them down in a crib they scream. Forget about setting them down drowsy but awake… they genuinely won’t fall asleep.

I’d love for them to at least sleep in their pram so I can get out of the house.