My babies are 12 weeks. They used to nap really well in their swings. Now I'm just getting cat naps. I know I'm probably missing the window of putting them down for a nap but how do you put down twins for a nap that are relatively on the same schedule? I've read other posts that say to start the nap routine at the first sign of a yawn or after 90 min of awake time. I just don't know how to do this with two. It seems like we only get long naps in the car and sometimes if they fall asleep nursing. Any suggestions or advice would be great.