A BBQ Temperature controller can save you a lot of drama and let you get some sleep.
Put simply, you set the temperature and a blower fan takes over and feeds air to the fire to maintain the set temperature.
Controllers can be analogue or digital and can get really cleaver. Some are full wifi and can be monitored and changed from anywhere with an internet connection.
Most come with a choice of adaptors to suit Kamados, Offsets, UDS, and other BBQ Smokers