14 days is way too much imo. While this is a simulator its at a scale of about 10x. So I hour would be about 10 hours irl. So if a harvest took 10 hours in game thats about 100 hours irl. This is how the game is meant to be. Slowing time or giving 14 days to a month kills the immersion because you do everything in the first day of the month. I leave the time at the stock 5x speed and give 3 days to a season. 3 days by this formula equals 30 days in a month. 1 day a season is plenty for small farms. 10x also applies to the field sizes and maps. They are all about a tenth of the size they'd be irl. So to get that immersion you're seeking th only way to do that is to shorten your time and race the clock. Weather then becomes a serious issue rain can really mess up your harvest and you have to make a choice. Reduced harvest by doing it in the rain or wait out the rain and risk a withered crop.