DD1 is 21 months old and DD2 is 3 months old. DD2 will not nap on her own for more than 10-20 minutes at a time. I had previously been able to solve for this by baby wearing. However, now that she is a little older she doesn't sleep very long while being worn either due to noise made by DD1. Any tips on how to survive until DD2 is old enough to sleep train? I have a seriously cranky little baby on my hands.