AndrewCanswered grow question 3 years ago I use Low Stress clips when they are further along. This early, you don't quite need to start yet, but if you do, use something like this:
https://www.amazon.ca/Luster-Leaf-Prod-Inc-839/dp/B000RUFDI2/ref=sr_1_11?keywords=lst%2Bwire&qid=1638556964&sr=8-11&th=1
Then you want to bend the sections that are being blocked, so they are seeing light. At this point judging by your pictures, you don't need to start yet.
However, when you have a few nodes, I have started using clips like this:
https://engineeredessentials.com/collections/plant-trainers-for-low-stress-training