but I am wondering what everyone else out there does when they are sleep deprived
I have 3 under 3, so I empathise.....

I currently have all 3 of mine sleeping really well at night, so I am "topped up" but that could change in an instant, unfortunately!

If I am short on sleep I'll admit to using caffeine as a prop if I have to..........(I then use EMB to feed Lexie).

I also take In-Liven, which I find peps me up.

I also TRY and get a nap at lunchtime IF I can get all 3 to sleep at lunchtime.

If not, I at least try to get a "rest" for at least 40 mins after lunch whilst they are all 3 in their beds (Olivia often will play quietly and happily for 40 mins in her room.)

Some days, when I am totally wrecked, I get them all down to bed by 7.30 pm and then go to bed myself........then I know I will get at least a chance of max sleep.......