10 weeks veg is perfect! But you raise a good point -- you don't want to be lst'ing a thick branch or down by the stem after week 5 or so. If you topped so you have four main stalks, you should tie those down soon after you top, but don't keep trying to bend them down further later on, or else the stalk will break. I did that and right down by the main nub of the plant, where I had topped it above the second node, a split opened up about a half inch. I just left it alone after that and it did fine. I guess there were plenty of roots running below all sides of the plant that it didn't matter that much.
You can tape it together a bit -- but also just don't put any more pressure on it. As you go into flowering, you're now going to want to focus on supporting the growth and colas. You're time for bending is over!
Good luck, your plant sounds like it will yield nicely!