I had the EXACT same problem with my first grow!! I didn’t catch it in time, she was nearly entirely to the top I think 2-3 weeks into flower. It sucked watching it because I watched the biggest buds burn, even after harvest, my biggest buds were the driest and least desirable. I agree with Ben, bend, bend, bend!! I used hooked-magnets and string to tie them down. The plant was so resilient, even after trying them down it would grow the stem in a L shape and shoot straight back up!
Try your hardest to get it away from the light, I’ll definitely do more this time around. It’s not fun watching them cook against the light, it also causes the red hairs to… redden… prematurely.
My first grow was, however, a success and was the best crop between the 4 plants I grew for my rookie grow (3 in a tent, 1 in a Grobo.). In fact, I’m not even going to do a tent this time around… even though I have two… I plan to purchase another Grobo (or two) and go totally Grobo from here on out.