Discoloration entering late bloom period! Help I'm a newbie!

I just wanted to share some additional info. I flushed with nothing but PH'd water and Cal Mag on Thursday last week with 20% drainage. I then fed the girls on Sunday trying to keep with the General Hydroponics feeding schedule here: https://gh.growgh.com/docs/Feedcharts/GH_FloraSeries-DTW_03216am.pdf According to the schedule, I should be feeding nutes for two more weeks and then flush for an entire week. So should I ignore the schedule? After this post, I called a friend in another state that has grown before. He told me that they are big plants and are getting hangry. He suggested I am not feeding enough Cal Mag for Blue Dream at this stage. He thinks I solved the nutrient burn last week when I flushed but that I did not feed quickly enough afterwards causing a Cal Mag deficiency on top of the nutrient burn that happened last week; he called them "rust spots". So based on the answers I have received here so far in addition to what he told me, I am thinking of doing the following: 5 ml/gal Cal Mag 1-0-0 5 ml/gal Flora Nector 0-0-1 8 ml/gal Flora Bloom 0-5-4 Nothing else. Thoughts?

At that point in flower you should ease off the nutrients and start easing into a flush