Nice start!
Most P. cubensis look the same when they are growing. If you eat them fresh they will be stronger vs dried.
I've done 5 flushes out of a mono tub before. 2nd flush tends to grow fewer mushrooms that are larger in size. and smaller yields after that per flush.
I've also cut it up and spread it out in two tubs to increase surface aria and encourage more fruiting sites after a small recovery period. When its all spent bury it whole in the yard with some compost or manure and they may pop up in a few months time :D
You can also take half the mycelium brick and break it up then mix it into a new tub, it will colonize it like your smaller box right now. but medium needs to be treated/sterilized to prevent opportunistic organisms. stupid simple mix of coir, gypsum and manure works well.
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