Definitely use only 1 stroller plus a carrier when gg out. My kiddos can’t sleep in the stroller at all. When I put them down, they’ll wake almost v soon. I have to carry then they’ll continue sleeping or else, I’ll be facing cranky ones. They use the stroller to sit in, eat in, etc…except to sleep. And if I have to travel via public transport, 2 strollers or double ones will be too much of a hassle to handle, plus with a baby bag of stuff…🤦🏽♀️ So a big no no for me. 1 stroller is more than enough for 2 kids under 2.
My first born was 1y3m when I gave birth to my second. I had a double stroller and single stroller. But soon found out that my first born prefers to walk instead. Hence i use a carrier + stroller when we go out. The double stroller was really unused 🤣 Really depends on your kids 🥰