My green tomatoes aren't growing
I have 4 container tomato plants. They are planted in a box that is 8 feet wide by 16 inches high although the 4 plants are relatively close to each other in the box. I fertilized them when they were transplanted and then added tomato fertilizer sticks once they bore fruit. I believe that I may have been overwatering them based on some bad advice from a friend :) I only water them now when the soil is dry 2 inches down but that still seems to be about every morning unless mother nature has intervened.
The first fruit that I saw is now 1.5 or so inches big but hasn't gotten any bigger in weeks. The plants continue to produce tiny tomatoes but nothing is happening as far as growing the first/largest tomatoes. Help? :)
I searched this forum and think they may be root bound but they are in a fairly large container. Should I spread them out? Do they need their own individual containers? Before moving them around I would love some advice. TIA!