I did the same thing over and over on Summer day 3. It crashed every time I went to go to bed. I started day 3 again, tried immediately going to sleep in the morning to see if I could get to day 4 or if it would crash again. It worked and I started day 4. Did my usual routine: crops, animals, selling items. Made a purchase to upgrade my ax to silver. Tried going to bed and it crashed again.