Yeah of course, Minoxidil does increase the effects of sleep wrinkles and expression lines, it basically contributes to it, not entirely the main cause. Do you use minoxidil when your hair is dry? It's important to do that to avoid systemic absorption. I used to shower and then apply it, where side effects increased actually (Heart rate increased). Do keep using it, but decrease your dosage, at least that is what I'm doing, still no side effects till now, except a very very very minor itch, could be even not from minoxidil. My skin is oily, so that's an indication that no systemic changes are occurring onto my skin.
Just close your eyes and sleep! lol, kidding. I trained myself to do that, First it was music, then I started to always turn on a movie and sleep while it's on, sometimes even standup comedy lol. It's a bit of a weird habit but I like it. Sooo I'd sleep right after 5 minutes of the movie starting.