Girls, what do your babies sleep in at 1-2 months old? My baby can't f…

Girls, what do your babies sleep in at 1-2 months old? My baby can't fall asleep without a diaper, his hands won't let him be still. And from diapers there is sweating. It's not hot at home, 23 degrees Celsius. We have tried different diapers, but he only gets out of thin ones after 3 minutes.