Yes when cooking risotto you must stir the risotto every 30 seconds to keep the risotto from sticking to the pot.
As long as you stir the risotto every 30 seconds the risotto should turn out just fine but if you don't stir the risotto often enough then the risotto could burn.
Stirring and agitating the risotto rice is important, because risotto's creaminess comes from the starch generated when grains of rice rub against each other.
So if you don't stir the risotto rice it won't turn out good enough and it will burn.
You can sometimes get by with stirring it every 40 to 50 seconds or every minute but you can stir it more often if you want too.