When I’m highly motivated and want to accomplish huge technical work I will shift to sleeping 2-3 hours, working 6, then sleeping 2-3 hours, I will keep doing that for as long as 4 days straight and do nothing but work, sleep, eat. I don’t tell many people this as they think you are crazy, but my family knows, and they think I have a mental health problem. I don’t at all. I function completely normally and fully regulated in all ways. I just really really want to accomplish something asap.

I do this too. From what I've been told, this may be a symptom of ADHD, namely hyperfocusing [1].

https://en.m.wikipedia.org/wiki/Hyperfocus

Well 6 hours of focused work is really good. 2-3 hours of sleep windows isn't enough for REM/deep I'd imagine which is the crazy thing.

You certainly have mental or health problems.if you are not an alien and have the same dna as humans , 2 to 3 hours of sleep will absolutely not be enough for your health and brain productivity even if you believe otherwise

In a 24 hour period I’m getting 6-7 hours of sleep. The difference I find between regular days and single sleeping is that my mind is able to keep focused and in “flow”.

People mention REM and I don’t know how to be certain but I think I do hit REM, the fitbit refused to analyze sleep less than 4 hours for me, but when I’m just slightly over it, it reports good percentages of both REM and Deep, 23% REM and 21% Deep, according to them above average. It never likes my durations though, always too short. I only sleep 6 hours on average according to it.

That's my optimal schedule too, but I cannot do it.

First two hours awake in the morning is devoted to toddler, which includes feeding him, dressing him, then waiting for 0730 so I can take him to school.

Similar schedule when he returns.

Hopefully when he's older things will be easier in the morning.