Big hugs =(!
While I don't have kids, I did live next to methheads for a good chunk of change and they wrecked my sleep and I think they made my brains go further cuckoo and for sure aged me up. Sleep is such an integral part of existing, I hope they calm down soon and you get some solid zzzs. Perhaps naps might help? I am not sure, and I don't know how much you take care of - or if a partner is in the picture - and how much they take care of? But either way I'm sorry it sucks so much. I hear it's worth it big picture =)