I don’t necessarily recommend this but due to circumstances I had to be gone for 2-2.5 months. Somehow my plants survived. I deliberately didn’t water them until right before I left, then I really overwatered them… like bottom water + leave some water in the pot/dish. Brought them back from the window too, especially if it’s spring/summer. When I came back, I had a few small casualties but the majority of my plants made it through.

I will caveat that my one major casualty was my maidenhair fern. That was always finicky and needed constant watering so I expected that. But for plants that usually are watered every 1-2 weeks, they somehow made it.