It doesn't matter if it has been days or not UNLESS you have gotten a random move-in since the last time you visited or hosted somebody.
It hasn't been proven that your void will clear - a voided villager given to you by someone you host or visit will hang around in your void until you let them move in.
People (including me) have TT'd months in-game and, upon visiting or hosting somebody, still gave them a glitched plot from previously kicked out villagers "months" ago. Ex: I kicked out a Diana via campsite in April, TT'd to August one day at a time to try to get campsite visitors, visited my bf in August, and still gave him a glitched Diana plot.
Natural moved-out voided villagers from others may clear from your void after a few days (have not had this happen in my own testing), but kicked out villagers for sure do not clear properly.
If you know who you visited or hosted days ago, I would ask them if they had kicked out a Zell via the campsite.