Can you prevent feudal levies?

[Tanaka]

I am being flooded with units I don't need! Can I prevent this? [&:]

[Joram]

In Simple economy, no.  In advanced, I think you can change your feudal level to a point where you get very few but each change in feudal level has some significant national morale penalties (albeit temporary).

[moose1999]

Be careful adjusting the feudal slider.
The hit to national morale is significant and unless you''re on a winning streak on the battlefield or producing loads of textiles that loss can be hard to regain.
And there are also some other downsides - less feudal income of course and fewer draftees in the spring (which you apparently won't miss...).
But the boost it gives to merchant income cn be worth it - if you have a merchant-dependant economy.
If you just want to avoit surplus units its not worth adjusting the feudal slider. The consequences are just too dramatic.

[Ironclad]

Dropping your military readiness below 100% stops the feudal levy.