Schedule VM snapshot deletion

Can anyone please help me with the following case;

We have one VM (eg VM_1).

We take snapshot of this VM_1 on Saturday,

Trainers use this VM_1 for training purpose. So all the delta data will be written in delta file.

On next Saturday, after 7 days, we revert VM_1 to its original state, by "Go To Here" above snapshot > delete snpashot. This will not merge the delta disk to the original VM_1.

This is a manual process, but can this be automated?

Thanks.