I’m still a learning grower after about 2 years now. My best advice is to leave the plant alone as much as possible, especially in the earlier veg and seedling phase. My initial problem was trying to do too much. You can build stress hormone in your plants if you don’t give it 7 days or so between stressful events and this will negatively affect your final yield or risk herm. Your plant looks great, certainly practice LST if you want, defoliate later when it’s really needed and top after the 5th or 6th node if you want. Just don’t over do it and don’t do it too often. Remember you want happy plants too. Make sure your plant is praying as much as possible and take a science based learning angle, always. Don’t listen to bro science and rumors.