Would advise against that. One time our flight got delayed for six hours (ugh) at a lay over - some technical glitch so they were not sure when the plane is going to actually depart. My partner didn’t sleep the night before because of anxiety and she was extremely sleep deprived - would have easily hmissed the flight without me being there with most of my faculties intact.

And Aeroflot are not known for their hospitality and understanding to foreign travelers...