If you haven't topped photos before, then start with that.
- Once you get consistent results, with only 1 - 2 days healing time needed, before they start growing again.. It won't be too much of an issue topping autos.
The problem with topping autos, is that, if you do it badly It can result in the plant needing 1 - 2 weeks of healing, and you ending up with a tiny plant because of it.