To give my perspective from having experienced this side as well (did not use the more powerful medications and recovered from the worst part in a bit over two weeks from the time it got distinctly worse with a small residual effect for maybe a couple weeks after that): I agree with this list but would phrase some of them a bit different.

I'll start mentioning that my understanding is that there seem to be a few different types of outwardly similar issues with major differences along with variation within a type and different severity. I was never at danger of suicide and never started a note, though I did vividly imagine suicide at one point. The worst part for me was panic attacks that lasted hours on a few days (suicidal inclination at that time could be deadly as it felt like the end was near in any case, although for me that was not when I imagined suicide). I never use recreational drugs including alcohol (unless you count sugar, which likely you should). I did not hear voices or see people who weren't there but did have a visual oddity during most of the worst times (which clued me in that something was seriously wrong; I wasn't able to make as much use of that insight as I would have hoped but the worst parts happened later when it was much less visible).

I call it brain overheating but it was not just the brain; the rest of my body was overheating as well. I suspect blood brain barrier issues and blood sugar issues during this worse time (but not other times). Adding some oil to my diet seemed like it might have been quite helpful (although jumping to conclusions was a big part of the issue). My memory was both better and worse than usual in some ways; I could pull a bunch of memories to support a theory (at times definitely invented some but mostly real memories I think) while contradictory memories were much harder to recall and dismissed way too easily or worked around in elaborate ways. I started with a theory that felt true (related in some ways to things I worry about but also random) and my brain worked to figure out why it must be true and to fill in details rather than questioning it. I would eventually figure out that the theory was false but then jump to the next one, particularly during the worst couple of days. I don't think someone else engaging much with details of such thoughts is likely to be helpful but gently honest feedback about your overall impression if you do listen can help point the way to reality (I do think there are aspects of reality in the overheated thinking as well but they are covered by the false connections). Writing down what I was thinking was helpful and made it easier to spot the issues later (just don't let anyone else read it). I had strong "universal love" feelings, religious feelings, and paranoia at different times (and maybe combined in some ways).

I would not phrase #7 on this list that way and wasn't similarly magic to me but I do think it helped that when I thought cops were coming for me I was basically OK with that and tried to be ready in a way that would limit the chance of being shot (then eventually the fact that they didn't show up brought me back to reality some). I don't think joining a religion in that state is a good idea and it is a helpful show of love when those who are religious don't try to take advantage of the religious feelings to try to push their religion (clearly not the intent here, I agree with accepting whatever happens being helpful). Getting outside when I was improving is what finally resolved the worst times for me but earlier made it worse (because it worked its way into a theory). To get to that point focusing on a simplified daily routine (and finding some things to do that helped some or at least didn't make things worse) was most helpful for me.

In terms of sleep low dose delayed release melatonin seemed quite helpful to me as well. I would add that it is not just lack of sleep that causes trouble but circadian rhythm as well. Symptoms were distinctly worse for me at night and brighter mornings seemed to help more than cloudy mornings.

Isolation was helpful for me as nearly every interaction I had with others was embarrassing and made things worse. I also accused one person I care about of doing something malicious and feel bad about that. At the same time feeling love from a few people (including the person I accused, who I apologized to fairly quickly) was also helpful. I misinterpreted coincidences as being malicious so I would say isolation is good but avoid permanent decisions until fully recovered if possible since decision making is impaired.