Can you force cascade up?

So I almost finished my site while working in Desktop mode, only to see that a lot of my design is different in 1440+. I may have made these changes in 1440 without realizing it, but now it’s pretty grueling to switch back and forth and copy every setting. Is there any way to force Desktop to cascade up to 1440+? Like to reset any alterations I made from that default setting?

Here is my site Read-Only: LINK
(how to share your site Read-Only link)

Finsweet has a chrome extension that supports deleting the expanded breakpoints allowing you to start over. I don’t see another way really. Hard lesson to learn.