This is to show you how to take care of your tomato in this time around.
You need to cut off the buds of branch so that the main stem can grow. The orange circle in the photograph shows a bud coming from between the main stem and a leaf. It should be removed.
This photograph shows, by a blue circle, that an unnecessary branch has been cut off. In this time of season, you need to check this very frequently like almost everyday. If you leave those branches to grow, your tomato will be terrible and chaotic with many stems and branches such that you want to start singing “Welcome to the jungle!”. Cut them off, or you will get small size tomato.