foxfarm schedule and harvest time

first time using foxfarm nutrients - bought the basic 3 pack
i am two months into flowering and the buds are not ready
the foxfarm schedule only goes two months
i was thinking it's best to just give fresh water because the trichs are milky white and will probably be amber soon
has anyone else here run into this and could possibly offer some wisdom?

the nutrient chart says to continue the same feeding as necessary but you might want to start flushing if the trichs are that far in.