First of all, welcome to the forum!
The first question, in a situation like this is what is the temperature inside your smoker, and how do you know? The built in thermometer for many smokers is not very accurate. I use a Maverick Ready Check. I have both the ET73 and now the ET732 versions and that allows me to have relatively good control of temperature inside my smoker.
How much smokey taste are you looking for? What is producing your smoke, wood chips or wood chunks? What type of wood? The more info you can share the more likely people here can come up with some help