Hi hun, welcome to BW! Just a few questions, how do you typically get them to sleep? Swaddle and put into swing, or do you have he swing on/moving initially? Short naps are really common at this age so it is normal to have to help through transitions and sleep cycles, but could you keep track of a day and post their routine so I can take a look? I get that you can't spend all day resettling both of them, especially if you have other LOs at home, so tweaking routines may be key. It may be entirely possible one is ready to move to a 4hr routine before the other