I have a tomato plant that is about 13" tall right now. The plant has a sucker that grew out when the plant was just a few weeks old. The sucker is about halfway up the plant and about the same size as the top half of the main stem causing the plant to make a perfect Y. I can only imagine that this is going to make supporting the plant difficult. This is an indeterminate currant (smaller than cherry) tomato and I believe the plant can grow very tall as it is not weighed down by large fruit.
I heard that I should only trim suckers off the lower 1/3 of the plant. As this plant is still young I'm wondering if the removal of this sucker will harm it or not.
I'm worried that the plant can split down the Y later when the branches get heavier.