Change project start without affecting task dates?

I have been using OP to manage a long project. I’ve been deleting completed tasks, adding others, generally updating along the way. I now have a project with over a year’s worth of blank dates at the front before any tasks start.

If I edit the project start date, it pushes everything back by a year. Is there a way to not have to look at all that blank real estate? I’d like to change the start date without affecting the task dates.