That’s a long time. I sit cuts in water as well. I’m guessing the water may be getting too warm from the sunlight in the window. I sit my cup in the shade, and roots are shooting through like your update there at about 12 days. Give or take a day. Good job for having the patience. It’s worth it.
When my easy clone is full that is what I do with my cuttings until there is space. I think you'll be fine even if you don't wait but waiting will only ensure good growth.
I root all my house plants in water and even have a few split leaf philodendron s that are huge and thriving growing in just water for 2 years now. They get nutrients from algea growing on the roots and the spring water I fill the jar with.
