Buds falling over?

My WW Buds are getting to top heavy and I have had 2 flop over. They are in hydro and really no way to support them. I have tied them up in places (ceiling,fan,chain for my 600 light) to help support them. What should I do? I am in Flower day 53. I only have one bud that is getting yellow upper fan leaves? Some milky Tricomes and a few amber? What should I do in the future? I do plan on building a PVC tower around my table about 5'6" tall to lean and/or tie them to. The plants have had an oscillating fan on them their whole life and had big stalks. Thanx

tie some fishin line to the cieling and tie em that way if its possible

"What should I do?"
"I have tied them up in places (ceiling,fan,chain for my 600 light) to help support them."
that is exactly what you should do, tie em all up, you dont really have any other options.