@DianaB thank you for answering my question. There are only two of us as well, and the loaf I made is a lot (too much) of bread for two people. I'll try freezing some of the fermented dough next time and also make up some buns for sandwiches. I haven't made a lot of sourdough bread so do not have a lot of experience and freezing the fermented dough didn't occur to me until you mentioned it.
A question about your proofer: how does it compare to just leaving your dough on the counter to rise?