This week I have accumulated 26 hours of scheduled meetings. It beats the amount number of hours I can handle to deliver my work properly.
At this moment, I think 20 hours is a good number, less than 15 hours means I’m not attending the team or the clients and more than 20 means “you’re in trouble”.
I continue organizing my time from I changed my position, after 2 months I’m finding the right way to do everything in a good level of productivity.
You can think it’s too much time to organize it but it isn’t.
WordPress
Google + 
Facebook