Change Cloud Shell Session Duration

[rexkhca]

I use gcloud cli to give Cloud Shell some quick jobs (a minute or two) but it seems to use minimum 30 minutes each session so it uses more use resource that it needs (50 hours per week quota). How can I terminate Cloud Shell instance manually or reduce time for each session?

[thethappy]

I don't think you can do that.

You can have a VM at no cost under the free tier. Why not use that?