What makes 2,3 cows a pain is getting them bred. When we had that few, we hauled to a friend's who used excellent bulls and turned them in with his herd for breeding season. It isn't worth owning a bull for so few and AI has its own set of challenges. You don't get as good of conception rates from artificially synchronizing them as natural heat, but good luck finding an AI tech to come out 3 times for one cow each.