Trim, train, or trellis?

Hi all, this is my first year growing tomatoes successfully from my balcony. This tomato won’t slow down its upward growth. Do you think I should cut the tops off, try to train them back down the plant, or just add to my trellis? I don’t want them to go much further upward as they are living on mostly supplemental light and I have shorter plants that depend on that light as well. Thanks for the advice, happy growing!