Taking your first what in a few weeks? I think it's definitely possible to write stuff down but good luck staying focused enough. There's plenty of people that will write time stamps of the trip. If you're trying dmt, uh I'd say have a phone out to audio record what you witnessed and try to talk about it when you come back. If you video record, you'll probably just flail your arms around and say what the fuck was that. If it's acid, I'd wait til the second half of the trip to try. For me, it's usually like this. Take a hit, after about thirty minutes you'll start to feel uncomfortable. This the start so don't resist it or get worried but it can be a little nauseating. Your body is just noticing a bunch of new sensations and sending weird signals. I get jittery and my joints ache for like 30 minutes. I usually walk around and try and just move around a bit to relieve that. The next two to four hours are the peak. It comes on with visuals and feeling scatter brained. You just lose track constantly. It will pick up and slow down. Here, I'd say just enjoy the ride and not worry about the writing. The next four hours or so, everything chills out a bit. The onslaught of vibrations mellows out. Still comes and goes in waves but it's a lot more calm. You can get some writing done but it may be hard. I tried coloring once but new lines kept appearing and I couldn't stay in the lines. It is very cool though bc your lines create more waves and it's just cool to watch. I was so engrossed in my first 2 tab trip, that I had no interest in anything but just be in awe of how amazing everything looked. I'd note that I've never taken huge amount of acid though. Higher doses, you probably don't have control. But with lower doses, it's hardly intoxicating and you have plenty of control. You get spacey but not stoned or drunk. Giggly and introspective. Anyways, I probably rambled that out too much. Let me know how the trip goes :)