Zero sleep and sick kid...helpp

My 2y.o isnt feeling good. He was up every 30 mins or so last night so everytime I dazed off to sleep he'd wake. Needless to say neither of us got much sleep last night. He's tired, I'm tired buttt I have another child. She's his twin and for the most part is content on watching cartoons while the boy and I cuddle on the couch.

I am VERY tired! I have no friends or family or babysitter that can come over to look after girl while we nap. I feel like a failure for not being able to manage both but I'm so tired. I'm doing everything I can to stay awake.. coffee, water, talking to family on the phone. I'm starting to feel like crap too. Idk what to do! My husband is at work (military) and can't make it home.

Anyone have advice, tricks to stay awake? Nap time is in 3 hrs.. I just need something to hold me over! Idk how I managed twins (pretty much) alone during the newborn phase..