I have this same problem, i never use the second screen. I got my self a 27inch 4k monitor. I can have windows next to each other if i need to. more then enough

I have this same problem, i never use the second screen. I got my self a 27inch 4k monitor. I can have windows next to each other if i need to. more then enough space for my self. Anything else i would need to move everything to far back and I would start to need my glasses, or like you said constantly be moving my head