Yeah, they look like they could use some support, but to make sure you don’t damage the stem, I would maybe pull a string from the white pole to the other one; it looks like that should work. If not, then try using a stick in the middle or even from above, like support for tomatoes. In extreme cases, yeah, you can tie them to the still, but I would avoid that. Good luck, and your buds already look really tasty!