3 hours is approximately one standard REM sleep cycle. So you could be somewhat okay.

From your previous post you mentioned looking at screens while tired, which would suggest a problem with Blue Light.

Deep sleep uses the chemical Melatonin, which is naturally produced by one's body at night time. Blue Light, e.g. from screens and LED light bulbs, tricks the body into thinking it's still day time, so it doesn't produce its sleep chemical.

My suggestion would be to remove electronics from the room or shut it away/turn it off, and limit screen use for a few hours before bed.

(Not saying that this is definitely the solution, just a suggestion)

3 hours is approximately one standard REM sleep cycle.

I think it's 90 minutes

Does a slight tremor come with that?

I think maybe lack of sleep might be contributing to your hallucinations, so maybe you could try to improve your sleep hygiene:

• Get some exercise in the daytime so you don't have extra energy at night. Running or other medium/high intensity cardiovascular exercise for an hour or so would be best.
• Don't eat anything too close to when you want to sleep.
• Don't do anything stressful or high energy too close to when you want to sleep.
• Eliminate any source of light from your sleeping area. This can be a computer/phone screen, a window with some light from the street/neighbor, or even small LED lights on various electronics like power strips or alarm clocks. For the last item I find dark tape like electric tape or several layers of masking tape helps.

Hopefully after you've got some solid long hours of sleep, you'll feel better. Sleep is one of your brains best tools to heal itself.

Could you be thinking of my previous post?

I had a blue themed dream last time

I was in an empty building with a lot of rooms and short and narrow halls that connect them

The walls were light blue, the floor was covered in a dark blue carpet, and doors were some shade in between, some doors were locked and the whole building was lit by a dim natural light as if it was dusk or dawn

I was floating there like a ghost so I explored the building

Some rooms had just a desk, some had a TV, and others had something that looked like a photocopier but was full of gears

After a while I wanted to get out of the building. I look at one of the open windows and I can see the outside. After I pass through the window I find I'm still in another hall, I pass through another window the same thing happens. Tried that a few more times but I couldn't get out.

Actually, it seemed like this previous post was neither you nor OP.

I wish I could remember such detailed dreams... I should take my own advice.

Blue Light, e.g. from screens and LED light bulbs, tricks the body into thinking it's still day time, so it doesn't produce its sleep chemical.

idk if it’s something all computers can do but turning on “night shift mode” blocks the blue light. for better sleep i think you’d probably want to stop using screens altogether in the last few hours before bed ideally but this can help too.

I'm not experiencing rem sleep at this very moment. Does that mean I'm awake? Only time will tell.