I'm currently experimenting with updates. The VPS I'm using doesn't have enough space, so I use an external ("pay by the hour") host for updates. If all works out, I'll be able to provide monthly updates again with only a few hours of additional server time, and a few minutes of my own time.
I tried another update, this time with the "Premium KVM" (with NVMe) instead of "VDS" (with SSD). Unfortunately this was slower, but the update is complete again.