Put your hand on the part of the plant closest to the light. If your hand is uncomfortably warm your plants are too.
You gotta do something because I can see you have many weeks before they quit growing.A. Are the pots siting on anything
that can be removed? B. Can you move the light higher? C. Can you move light, pots and all to where you have more headroom?
If you answered no to all above it is time to look at trimming/topping. You can top them early in flowering stage. After figuring out
how close to the light you can get, cut off the main stem with one clean cut. Bending is also an option I am not familiar with. If you
can't rearrange stuff or top them then bending is all I can come up with.
BigSteve.