Yet another flushing question...this 1 is interesting

First of all, this is my 1st successful grow, so I'm pretty new. Growing 2 WhiteBerry in DWC
I have just started flushing 3 days ago on the advise of my local hydro store. But with all the research I've been doing in the last few days, I have changed my mind. I realize this is an on-going debate. But I also want to chop crown buds 1st, then allow bottom buds to fill in. (I don't want the plant to almost die do I?)
So I have started flushing with a flushing agent. Now that I want to gradually lower nutes, is this going to be ok? I mean to say, after using a flushing agent, can I start again with nutes? Or can I mix up a diluted solution and pour it in now?
 
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