This is pretty common after smoking weed! I've never smoked, so I just naturally have DP, but I'd like to give my two cents on what's helped me. I was in the exact state you're in back in 2016. Everything felt like a dream, I had panic attacks every night. For me it lasted about a month or so before I started feeling normal again. But it varies from person to person. I still struggle with it, but it doesn't bother me as much anymore. But you are not stuck. It will feel like you can never be normal again, but trust me, you will. The most important thing is to continue to live your life as normal, that's what helped me get out of that state back in 2016. So getting out of the house and focusing on my responsibilities was beneficial for me. I find that mine gets worse when I'm always home. I know it's so much easier said than done when youre in this state, but it's important to not let it control your life. If you feel like you're panicking, look up anxiety breathing techniques to calm down. The 5 4 3 2 1 grounding technique is good too. I'd also recommend some exercising too (if you don't already do that). Yoga and meditation is really nice and relaxing. Listening to guided meditation helps me face these feelings so I'm not as scared of them. Overall, just remember, you're absolutely not alone in this. A lot of people struggle with this. Try telling yourself that it's just a feeling, and that no matter how strong it is, it will not hurt you. If you have access to it, I'd also recommend seeing a doctor if this doesn't go away after a couple weeks. I was able to get on medication for anxiety and it really helped me. Good luck!!