How long for roots?

I cut the top of my fiddle leaf about a month ago and stuck it in water to propagate. I've changed the water frequently, put liquid plant food in there, kept it under a grow light, the works. In this same span of time the first plant has already started blooming new leaves. I'm just wondering how long it typically takes to get roots? I've propagated plenty of plants before and it was always about 2-3 weeks but this is my first flf. Thank you!