As long as you’re confident every thing else is on point.. most autos will take it in stride but don’t recommend more than one topping.
Problem is that autos can be temperamental, and if conditions aren’t to their specific liking, you will end up with problems. And that topping will only exacerbate any possible issues you have going.. that will lead to loses in yield, quality, etc.
I’m not a fan of autos frankly.. mainly cuz of this. If you’re used to photos, I’d just recommend letting it grow as is, do some mild training and see what happens. That’s just my experience tho. Good luck!