Turn your development device into a finished product. At this time you should clean up wiring and other loose ends. Remember that your colleagues and possible future employers will be looking at your device and forming an opinion of you from what they see. For examples of well-constructed devices, see the Photo gallery Make sure you test the finished product. There were probably some things which you did not think important about the breadboard model which turned out to be necessary to proper function of the device.
Ideas take a while to germinate.
Parts, materials, and other supplies take time to get, particularly if they must be ordered from out of town. It takes time to machine parts. It takes time for adhesives to set up or paints to dry. It takes time to test, and time to think about and find the true reasons why your device did not work as expected. It takes time to modify the device and test again.