I don't have a fixed schedule, I play randomly depending on my mood. I have many households and most of my households are connected to each other: they are family members, relatives or friends. My sims interact a lot with each other: they visit each other and spend time together in many places and in many occasions.
I currently play with aging off, but I definitely like my sims to age and see the children grow etc., but I like to age my sims manually when I think it's time for them to age.
I might, at some point, use the method for the unplayed "Townie-households" (which are not my households, belonging to my rotation) that I temporarily turn the aging on for unplayed households while having the aging on for active household only, so that other sims are aging as well. But sometimes I go to some of the unplayed households to age some sims manually, if they'll be - in some way - part of my played households' lives.
When I switch households, I usually like to switch in early morning, like 5am, to keep their work or school schedules under control.
In special situations, like when there is a pregnancy, I stay in the household until the baby is born; and also if my sim/sims are studying in university, I stay in the household until the current term is finished, but I might keep a little break in between and play other households, and then get back to the household of the university students, to let them start and continue another term, or if they are close to graduate: then stay until they graduate.
For me, playing rotational is the only way to play: I enjoy the variety, to play different households (all different types of households: single sims, couples, families with children, multigenerational families, friends living together, siblings, relatives etc.) and to play in different worlds (some of my households live in the same world, some live in different worlds but my sims are visiting other worlds whenever I feel like it).
I currently have four saves, all of them are rotational with many households that I'm playing in them.
Three of the saves are "normal, realistic" saves where I ignore all the occult stuff
(I only have aliens, spellcasters, mermaids + the paranormal pack -occults in my game, as I don't have the other occult packs).
One save is my "supernatural save" where I play also occult sims.