If an NPC sim isn’t doing a good job at maintaining their cycle you can give them menstrual products through social interaction or you can click the solve cycle option. You can take care of your sims cycle by using the toilet or clicking on them. Menstrual cycles are implemented through buffs and are randomized so there is a chance that sims will not be in sync. Mods / Traits: My Cycle Pack – Slice of Life – KAWAIISTACIE.
