So what’s the difference between mindless and servant?If you go for multiple girls at a time, that shouldn't really be a problem. The morning may not be used as much, but there is a good spread between afternoon and evenings events. There is also more on the weekends, so you don't just have to skip it for a week day.
for example, if i choose servant for mom and girlfriend for sis, sis will notice mom’s act towards MC is weird af? Or there won’t be any interesting interactions between girls when their positions are different?