listen to me or not... it's your choice... here's my advice...
if things started changing when u gave nutes, back off...don't stop, just slow down a little...and... things take time to adapt... just think of it this way... maybe what you did was in excess... don't cut it out completely, just lay off a bit... undrestand???
what I found is... if I started burning cuz I gave too much nutes, I would give straight water the next time, then just continue on at the strength that was too much, cuz by that time, the plant was used to it by then.
and always remember... this is a living organism....where things die off... it's natural. don't worry about things out of your control.