You can freeze sourdough starter; it thaws out and revives well after a couple of feeds. So no need to worry about keeping it going if you're intending long intervals between using it. Just freeze some.
I found it easiest to make and work the bread dough in the evening, leave it to rise overnight and shape and bake the next morning. The speed at which it rises overnight depends on the ambient temperature, if it's very warm it can be left in the fridge to rise. Never been a problem in the winter, though.
Count Binface has a letter in today’s Times! 😂
). We have a Polish baker at our local market who makes and sells nothing but sourdough loaves, white or brown. He sells out every week, it’s so good.