Hi everyone, so while I'm not asking for diagnosis or trying to diagnose myself, I need to decide if I should get re-evaluated after psychiatrist said I have Bipolar II/Bipolar NOS because I'm not sure I agree. The depression phase symptoms fit me without question, but the hypomania part is where things are questionable.

I know there are days and weeks where I get in a hyperactive mood and the sun is shining just right, I feel amazing about myself, get much more talkative (and lose my filter a bit), get flooded with ideas and feel generally more productive, almost giddy, loopy, etc. Sometimes this turns to irritability and agitation, especially when I'm in my own world working on a project or and someone tries to redirect me or interrupts what I'm doing. (It's like when the only thing stopping me from cleaning the whole house at 2am is the threat of neighbors getting pissed and telling the landlord.) Here's the thing though, as I understand it, a hallmark symptom is decreased need for sleep, I definitely do not experience this. I can stay up an entire night and may not feel it much the next day, but after 24 hours or so it catches up with a vengeance. I have a health condition that causes fatigue, "normal" for me is no matter how much sleep I get, and it's very hard to drag myself out of bed. But during these types of "episodes" (if indeed that's what they are), I still have this problem, but once I fully wake up, I wake UP! Again, I'm not asking you if I'm bipolar, but I just have two questions for people who actually experience hypomania.
1. Is the mood every second of every day for however long it lasts? Or does it get interspersed at any time with moments/hours of irritability or some other mood?
2. Anyone out there not have change in sleep patterns even if there is more energy during the day?
Answers greatly appreciated, thanks!