Ok good. No, then it’s not worth it to me. I thought you have a few centimeters of tolerance when building, since it’s only a matter of a few centimeters.
It’s good that this change (I don’t even ask which window still doesn’t fit optimally) is not quite worth you being crushed after all. Tolerance here is something not really affected factually by a displaced window, but rather by the fact that Mme. Princess on the Pea appears as a jack-in-the-box for the (if Tim Bendzko counted correctly) 148,237th time until she gets impaled. And, if you’re honest, not only we others know that this certainly wouldn’t be your last change – not even regarding the windows. When the new sofa and the new coffee table arrive, you’ll bump your knees somewhere and shift all that stuff by 6 cm (so three of them out of some axis of symmetry). Then you’d have preferred to have moved the windows 7 or 13 cm (instead of 10) after all. But from the outside, shifting them by 10 cm would be optimal, and therefore your question will be whether you can move windows a few centimeters differently inside than outside – “can you see that?”. My suggestion for your self-commitment wasn’t fishing for likes, but seriously a health concern for you – even though we actually don’t know each other in return. That should give you something to think about.