Do you have shell installed?
If so, run htop and take a screenshot when its just started up and another at say day 6 or 8, ie before day 12 ‘crash’.
Lets see if we can identify the process that is leaking.
If you don’t have shell installed, could you add this flow?
And this flow:
We are interested in the same data as htop, that is CPU over time and memory over time from the first flow.
The second flow should show us what process are leaking.