Optic Foliar Switch - Emergency Help!

All 8 of my babies are herming and developing tons of seeds rapidly (Week 5 of flower).

Will switch + transport stop new seed formation and allow me to finish the season with just the seed development they already have?

You can try, I know the switch will gasify in 4 hours. It's still going to be seedy as Hell but can still be good. If you're going to run these genetics again I'd hit them with it early and keep hitting it weekly till about week 6.