What’s going on?

Your biggest issue is that you don't have a grow journal. How do we know what you are doing to your plant on the daily if you are not logging it in a journal?

I’m having the same issue right now with that same mix of soil. Thinking it might be too high in nutrients maybe? I thought it was water at first but it’s been a week now and is worsening.

Look like overwatered. Dry your substrate and you will see what happen.

probably all the flushing... give it a second to recover, if it was getting toxic to warrant several flushes. the results of your choices won't be revealed for several days or even weeks depending on context. if you cause a tox, reconsider your previous fertilization strategy.