Hi, i had that problem in my last grow, i could not flip earlier to flower, because my lights were broken, and my flowering lights to weak..... so i cutted them drasticly down ( more than 2/3) . then i put one part outside, the other plant i supercropped and bend her down... a bigger Light keeps them shorter too. In your case i think your Lights may be to weak for the flower, because they stretch so much. Thats no problem if you know it and can keep your Plant short due LST/ HST/ supercropping or any other training methods. My solution would be:Cut them into a better handling Shape, maybe get another light ( one for each Plant or a much stronger ones for both. For your next grow::: flip earlier to flower, and use trimming methods to keep them small.. happy growing