Yea it’s a slight burn, just cut off nutes for next 2 feeds and water only . Once they finish stretch, the need for nitrogen drops dramatically, it’s why flowering nutes have next to no nitrogen.
Don’t over watered or flush, just don’t feed and allow her to use the excess nutes off. Water as normal when she needs it. It’s slight so the burn hopefully won’t increase. I feed to a burn and then back off myself.
Yea flushing I’m not a fan unless it’s major Issues. What u got is a healthy plant just a bit nute burn and I think she will correct soon enough. Just water for 2-3 cycles will correct issues. If flushed, add calmag in next water to maintain some balance and ph the water to ensure good uptake, 6.0 ish slightly acidic but not too much as we wanna get rid of excess.