Yes it is.
Ideally though, like any other habit, you’d listen to it every day. But you know, some people listen to 736367484846473 fields a day and it’s certainly possible that it won’t be easy to repeat that daily.
Look at it from a bigger perspective, like, you could ask yourself or even take notes “Did I listen to my fields 90% of the month?” Which would mean 27 out of 30 days. There’s an overall momentum you can build up, just as if you would work out regularly, learn a new skill, etc.
So if you miss a day or take a break, I think it’s ok as long as the momentum is still there.
I personally warmly recommend this:
https://forum.enlightenedstates.com/t/the-spirit-of-the-dragonfly/92319?u=nice2knowu