Not possible. The only way automations get updated without an HA restart is by calling the automation.reload service (bottom of the page). That’s what actually happens if you save an automation to make your changes take effect, it calls that service. Same if you click “automations” in this page.
This is why if you search the forum there are many, many, many posts where the “more experienced” users tell people why they need to avoid long delay steps, wait steps or for times in triggers/conditions. If you save any automation in the UI all currently running automations will be simply stopped and any waiting in any of those steps will be killed without completing.
The only thing you can do is vote for this post (or this one, or this one, or this one, …)