Recently, I've been unable to access the VM. I've looked through the console logs on the instance page, and I'm confident that the reason I am unable to ssh into the instance is that there isn't enough memory.
In the logs during startup, there is the line
[[0;1;31mFAILED[0m] Failed to activate swap /swapfile1.
See 'systemctl status swapfile1.swap' for details.
The issue is, I can't actually access the system in order to troubleshoot or remedy any situations I've searched for on the web.