how long left ?

hi how long can i expect my trichs to change ?
they have been flowering under 250w hps for 10 weeks

trichs are still cloudy i flushed a week ago too early

shall i start nutes again or does the cloudy to amber happen faily quickly ?

Keep flushing, the plant can survive fine for weeks of flushing, you want to pull it when about 20-40% are amber, unless you like it all amber. Anyway no such thing as over ripe in my book.