Welcome to quilting! That being said, I would add that sometimes (almost always!) it pays to back up-rip stitching out- and do things as directed for best results. Making 1/2 seams creates all kinds of difficulties as the process goes forward. As mentioned by several others, the proposed solution will not work. We all have to back up from time to time. It is just part of the process. Please know that we have all been there; fixed the problem; and, moved forward to happy success. My bit of advice is to fix your problem before you put your project away rather than have to come back to a project that has to be fixed before going forward. I still love new challenges after 50 years of sewing and quilting.