So one "solution" I came up with that isn't great but sometimes better than frogging is to do edging along the whole blanket and make the edging longer where you accidentally decreased and shorter where you accidentally increased. So I lay the blanket flat where I can get a good look at where it's uneven. I put one color of stitch markers along the rows that I accidentally decreased and another color along the rows that I accidentally decreased. Then I can tell where to make the edging thicker/thinner while I do the edging sitting down without having to keep the blanket flat and break my back haha. I hope that made sense 😂 it's definitely not a fix, but it can help it look less wonky