That's why it's useful to make regular saves! To avoid taking up too much space, I only keep saves from the beginning of the first day of each week and from the beginning of the last day when victory arrives (for storage), and saves from the last few days while I'm playing. Sometimes it happens that you have to replay, and it only becomes clear after a few days.
Please excuse me, but on difficult maps, only drug-addicted masochists do that. Sometimes, even 20-30 saves per game day are not excessive, especially when battles last more than an hour in real life (hello, Dandy).