Does slenderman need sleep?

I think it would be horrible if slenderman needed sleep cause imagine he holds you captive in one of his space time loops...But he falls asleep. I would suppose that the parallel world he locked you in just collapses with you inside O-o

Like he can't send you back, you can't live a miserable (although real) life like Masky waiting for the Slenderman to catch you again and mess with your mind

No, he cannot (we are together, he just told me)

technically, without eyes, hes sleeping all the time...right?