Hi,
Sounds like an interesting storyline. In terms of rountine, we have no cows but we do have dairy goats, so this might help give an idea.
Up in the morning, let out dogs for a wee, give cats biscuits before the dogs come back in, Go up to the goats to check in case one is kidding. Let out poultry (2 hen runs, 2 duck runs, 1 little hen house). Back inside for a cup of tea. Then go back outside with the dogs, up to goatshed. Milk all the goats (by hand or using machine), weigh each goats milk. Prepare all the goats concentrated food, if they have recently kidded chop them some veggies up as well. Give the goats their food. Feed any kids, whether newborn or a month or so old with the milk. Check goats water, if any need fresh, or more water then complete that. Check they have hay, top it up if necessary. Take milk down to the house, give some to the cats/dogs. Filter and strain milk, put in the fridge to cool, or into freezer if there is spare to freeze.
Prepare a hot mash of poultry food, and go round the runs dishing it out. Check water is clean and replace if necessary. Collect eggs.
Back to house for breakfast.
After breakfast, time for your character to hit the veggie garden (I would normally be going to work now though). Sowing seedilings, and bits to be dug over no doubt. Then there are other jobs like cleaning out the henhouse, filling their hoppers, mucking out the goats, routine worming and vaccinating, foot trimming etc etc, collecting hay or straw from a nearby farmer. Our goats get fresh hay in early afternoon, then another feed at 5pm of chopped veggies or beetpulp or alflafa. Goats need to be milked, watered and fed again in the evening. The poultry get some grain scattered in the afternoon, and all the poultry shut away as it gets dark.
I would agree if it is early spring your setting is then a greenhouse/polytunnel would be good.
Hope it does go well for you.