The guy was a bit fluey. I’m sure he was fine climbing a couple of stairs.If it's not (and he was genuinely sick) - then production are even more negligent. If it's not actually up there, they then made someone who was dizzy and unable to walk straight climb up a ladder (as we saw the footage of him going up) climb up a ladder when there was a good chance they would fall just to continue the idea that there is actually an attic.
Mountain. Molehill.
My bedroom is upstairs in my house, I can walk up the stairs even when I’m dizzy and fluey. Haha