Need timeline to adjust to actual end date

I feel like some of the standard project management timeline options are missing. When we complete a task early, I need the timeline end date to adjust to the earlier date. Then remaining tasks would adjust to earlier dates. I thought that if I could adjust the “timeline end date” to reflect changes in the “actual end date” the dependency automations would adjust.
I have tried a few things:
This automation doesn’t adjust the timeline end date.


This automation won’t work either. I have the option of adding the Timeline end date when I select first “do something”.
Screen Shot 2022-08-30 at 6.30.30 PM
But I don’t need it then. when I try select this in the the second “do something” field, it is not an option.
Screen Shot 2022-08-30 at 6.31.04 PM
Are these columns not compatible for automations?
I tried to use the formula column, but this just populates the Timeline End date in the formula column.
Screen Shot 2022-08-30 at 6.34.32 PM
but this just populates the Timeline End date in the formula column.

Does anyone have a work around that would adjust my timeline if we finish a task before the due date?