What came out, you can see in the attachment.
You are making a fixed window where it constantly has to be shaded, a bedroom (and living room) into a passage room, and if the partner does not exactly disturb sleep, then it is (here as well as in the living room) a door located behind you, which, because you do not see it, creates discomfort.
Certainly not optimal for the morning routine for everyone.
… not only in the morning, also in the evening or bothersome during the day when ill. And whether in 2 years or 5 or 10 you will still have the conjoined morning ritual is questionable. Especially at your age, changes and discoveries in daily routines begin…
I find the changes to be a case of making things worse while trying to improve them. However, your original idea with the dressing room, which offers more than just the bedroom, is also not exactly brilliant.
The parapet height of these corner windows is quite low at 76 cm, the narrow window is floor-to-ceiling. Admittedly, we wanted them symmetrical to the ground floor. Yeah yeah, I know - from inside to outside…
Yes, but they are not built or ordered yet, right?! You can still change them at the bottom. And the parapets have nothing to do with symmetry. I would clearly adjust a kitchen window to the bedroom window and not the other way around. With the kitchen unit you have many possibilities. And nowhere else do you have it top and bottom. Why especially the bedroom, where you have it rather intimate, like the kitchen, where public exposure bothers less?
Or is it about corner windows? … Symmetry would be if you made the door centered and the windows on the left and right of the frontage the same.
Just go back to the start and to the basics.