Jupiter notebook (In chrome tab) consistently crashing after 20 hours

My Jupiter lab notebook chrome tab has crashed in the middle of 22 hours of training a model, how do i know if it's still training it, if it has stopped, or if it is just running without doing anything? This has happened to me 3 times in a row and this time i would like to know what is happening. The GPU usage is going up and down with is suggesting it is training and simply not showing on the notebook, but i would like to make sure.
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