flush it,use vacuum pump,I have the same situation my saucers can't hold much runoff that's why I'm using some very basic equipment under my pots to hold them above the ground.this makes it easier to catch runoff.that lockout possibly made by amounts of nutes in medium.I would only do a very good flush at this point as buds are ripening.you'll have a good yield but smoke can be a little harsh.flushing is the ideal solution in my opinion.Also if you can check soil ph and see if there is something wrong.Which I don't think there is something wrong with soil.nutrients dropped the ph down that's all I guess.Flushing for a few watering sessions and coming closer to harvest.good luck