Pineapple Auto- (first ever grow)

Struggle bud week. Not sure if it’s the soil being nitrogen rich or what but the smaller plant has worsening cal mag deficiency so I tried flushing it to remove excess but just showed nitro toxicity. Leaves yellow and cal mag shows deficiency with just water but then adding half cal mag dose shoes nitro toxicity. Added sawdust to soil because I read that helps pull out nitrogen. Just hoping she hangs in a few more weeks. Smell is getting super strong and buds are getting big though. Bestva plant didn’t really grow for a few days but kicked back into gear. Probably two weeks behind the other one. Been doing some selective leaf removal every once in a while since it is so bushy.