Plant too tall. Need all advice

Hey man, I admit your situation is tricky, but you know, it's better to lose a bit of yield than to lose everything. First, check the flexibility of your central head to see if you can make it take a good turn or not. Second, cut 3-4mm off your central head to limit its vertical growth; it will slow down its metabolism a bit, but it will start to grow wider even if it's a bit late. Last tip, place your pot diagonally in the corner of the tent and good luck keeping it steady without making a mess, but when it’s a hassle. Good luck!