Hi!
You're definitely not alone in this. I keep getting these attacks of like 10-30 seconds where I get super dizzy, and nothing looks real. And it's not just like a regular "nothing feels real" sort of thing, it's actually not being able to take in anything. This happens a lot when I'm in school. It's when I haven't thought about the dpdr for a while because I need to focus, and then looking up and almost getting chocked at my environment. Usually it's when I look at my friends, and I get this sudden feeling like they're literally not there, and I look around and nothings there. It's like leaving my body for a few seconds, then not being able to come back completely. When I'm "gone" I look around and can't tell where I am and it's like I'm in a hallucination. By that point I'm so scared and chocked that there's no way to ignore the feeling. It's like suddenly I'm hit with reality and I just can't believe it, so my brain shuts me back and denies everything existing. Idk it's really weird.
I keep getting these weird moments of non-existence so I'm not sure how to fix it. But first and foremost I would advice you to not drink alcohol, at least for a bit because it seems to screw up someones brain for a bit. Personally I don't drink alcohol anymore, because it really increases my feeling of dpdr. Now I'm sure you already know all that, but maybe try not to do it for the time being? I don't know how much it disturbs you, but if it does I'd obviously advice you to stop for now. Also, if you're going to look at the computer screen for a long time, try and look up every once and a while. I don't know if these tips are super obvious to you, and they just don't seem to work, but it works ok for me. If I have a class where I have to spend an hour looking at a computer, I try and make myself look up every 10 minutes. Just to kind of take on my environment for a bit. What room am I in? What kind of people are around me? How's the temperature?
This is super difficult of course and could sometimes just build onto the dpdr, but after a while I feel like it helps a bit.
You're definitely not alone feeling like that though. It's honestly an everyday struggle for me. I guess the best thing to do is try and find solutions and work through the problem. It's very difficult but in the end I think it'll work
out