Question about making a decision

I have found that now when I actual schedule my day and honor my calendar I’m getting some things done faster than I thought I would. Therefore I’m sitting here with an extra 30 minutes before my next scheduled item and I’m like “what is this free time thing I’m experiencing right now?!?” 😆 I’ve decided to read because I love to read and I would rather not reschedule my day because I got done early. I guess I just don’t want to get in the habit of rescheduling my day every time I get something done in a shorter amount of time. Is this the best way to approach this? And do you suggest we use that extra time in other ways than doing something enjoyable, i.e. reading?