It's a good idea though, Peter.That 'eventually' is what is scary. 'Eventually' could mean 'too late to save you from permanent damage/death.' I make sure to arrange with someone ahead of time to either observe me, or at the very least call me every so often. If I don't answer, they know to come check. Having some small amount of help from the technology technician (she pops in 4-5 sessions a week if her workload allows) makes this easier to arrange, since I can focus on it when she is here to keep an eye out, but before that, getting someone to be aware is the only safe way to do it.
I briefly considered that we could set up something on here so we can let each other know that we're doing something dangerous, and post again once we're done, but it would be logistically challenging. Sharing numbers to call and such might be a GDPR nightmare.