I've been acclimating my seedlings to outdoors for 8 days now & just left them outside for 24 hrs. yesterday when night temp finally reached avg. 60. My plan was to plant Thurs. before I leave for 3-day trip. But now weekend forecast calls for nighttime temps of 47-50. What should I do?

I live in Ohio. When I plant early, I will often cut the bottom off of a soda bottle and place it over the plant at night. Seems to work for me. I also do it with young green beans to keep the bunnies from getting them. Only, I take the bottle top off of the bottle to get some air and keep them from getting to hot. Good luck!