Worth seeing what Google CoLab can do, https://colab.research.google.com/# has a free tier with CPU, T4 GPU, and v2-8 TPU, and possibly better (A100, L4 are usually greyed out).
Idle timeout
If a Colab session is idle for more than 90 minutes, it will automatically disconnect.
Absolute timeout
After 12 hours, the runtime will disconnect, regardless of activity.
You can pay to remove the limits of course.
Worth seeing what Google CoLab can do, https://colab.research.google.com/# has a free tier with CPU, T4 GPU, and v2-8 TPU, and possibly better (A100, L4 are usually greyed out).
Idle timeout
If a Colab session is idle for more than 90 minutes, it will automatically disconnect.
Absolute timeout
After 12 hours, the runtime will disconnect, regardless of activity.
You can pay to remove the limits of course.