I don’t mix seeing SBs and ML/WL at the same time. It’s usually 1-3 months of SBs then go back to random MLs and sometimes WLs.
This is because my cash flow is variable and it kind of gets boring to be doing only this or only that.
SBs are a bigger commitment because I have to pay them and hotel room, and the food SBs want continuity for a couple of months or more.