Change your cabin air filter first to see if that's the cause. Mine gets so clogged/dirty that air will not blow through. This is every month in my driving conditions.
Thank you all. Will start with changing the filter and move to blower sub assembly if it doesn't work. I've been cycling between the recirculate and fresh air modes and it seems to have gotten slightly better.
This happened before a few months ago and then started working again on its own. At the time I thought, hey its a Toyota it just fixed itself.