Yielding more due to missed pump is expected. The first few times will cause engorgement. But try not to miss often as ur body will think tt demand decreases so it will eventually reduce. Rmbr ur body gets cue from ur pumping so the more u pump, the more it will produce milk. But if frequency of pumping or bf-ing decreases, ur body wont get the signal to produce milk at the usual timing tt u used to pump.