Once a plant grows male flowers, it will continue on its genetic path of growing more and more, because it is a hermaphrodite.
This highlights the risk of growing "bag seed" as most "bag seed" is the results of hermaphrodites themselves, meaning any seeds produced this way will have a genetic dominance to being hermaphrodites. Far better to spend the money and buy quality feminised seeds from reputable breeders. Saving money by growing "bag seeds" will lead to far more expense by spending weeks growing hermaphroditic plants. Any male flower missed will have the potential to pollinated hundreds of seeds, so you must be very vigilant if you intend to keep this plant and will need to check every branch, node and flower thoroughly and every day for any male flowers or stamens growing within the female flowers if you want seedless flowers. Remember too, the pollen from these flowers will produce hermaphroditic seeds too, and will not be feminised. Just one missed flower has the potential to pollinate hundreds of calyxes. There is nothing you can give to your plant to stop more male flowers growing. Trying to mist your plants with water to "kill" any pollen released will not work either. Hand removal of every male flower/stamen is the only solution. Sometimes the amount of male flowers produced will increase to be in the hundreds, so be aware this may happen further down the track.
Sorry for the bad news, but I hope this helps,.........
Organoman.