How do you cope when the child wakes up all night due to fever ?‍?for …

How do you cope when the child wakes up all night due to fever ?‍?for 5 days now without sleep and today I will be getting up and not sleeping. Last night didn't sleep either, only 2-3 hours at most. It's like I was born again, but then there was strength, and now I'm exhausted. She has been waking up at night for all these 10.5 months, and now with a fever it's awful. What do you do during such moments? Even during the day she didn't sleep and in short, how many days can a person withstand without sleep?