This weekend I was thinking about a colleague with whom I tried to do a meeting and I desisted. When I saw his schedule he just had time between 13:00 and 13:30.
This hour, I imagined, he may be having lunch.
I don't want to judge anyone, but if I have the freedom to talk with him, I will give some advice: You don't need a full scheduler (all the time occupied) to show that you are working.
In my opinion, if you are every day and every time at meetings, you will never have time to produce.
I'm not saying the meetings are not important, of course, they are, we just need to join exactly to the share and decision meetings. Many meetings just need a simple "ok"