I started 4 plants indoors under floros and transplanted them outside in March. I LST'd them for many bud sites. They all grew in response to me tying them down. The problem is I tried to top one of my plants and the main stem has not recovered from it and produced two more tops.

All of the side branches are doing fine but the main stem is not. How long does it usually take for the top to resume growing? This is my first outdoor grow.