FWIW (I'm on my first grow, day 50), if you don't have many leaves to start with, proceed with caution. If you haven't read the tutorials on GWE, I highly recommend you do:
https://www.growweedeasy.com/search-...rd=defoliation
@Canuk147 has also given me some great advice:
"Now - if those autoflowers were mine - I would not cut leaves off the bottom - I would cut 2 leaves off nearer the top. Specifically - 2 leaves that are blocking bud sites underneath - you trim those off and those 2 bud sites you exposed will begin to shoot up with the main cola.
If you do that, and the plant responds accordingly - then trim 2 more that are blocking bud sites underneath - and you are off to the races.
I have cut more than 2 at a time - and the plants look absolutely hilarious - they look naked - but a few days later - the plant makes you look like a genius.
I have never lollipop so not sure about that - but - in my experience, topping doesn't slow the grow down much. Training pisses my plants off and they slow right down in their growing. So if your impatient - keep training to a minimum.
Good luck growing."
That said, your Sativas don't have that many leaves to start with. Just like mine. I have only taken leaves that blocked flowers or were obviously not healthy. I wish you the best of luck!!!