For me, I found it varies. I usually have about 1-2 wet dreams/month. Usually, I don't mind cause it releases some pressure. The only bad thing is if they happen when you're sleeping somewhere else. And the chaser-effect after wet dreams is also sometimes not so nice.
I also practiced the...
There are phases where wet dreams are quite regular. It's a healing sign.
To reduce the amount, try the following: Try to reduce the temperature in your bedroom. If it's very warm wet dreams are more likely. Do not eat or drink much 2-3 hours before you go to bed. Especially the eating thing...