If you are asking if monthly back ups are good enough then yep. It all depends on how often you use the data. And how far back you can lose before it is a problem.

When you are using the files on your computer everyday and can’t lose anything then you have to back up all the time. However if you only use things once a week or less then just back up after that.

At this point I use my computer every day but only do back ups once a month or so. Nothing that I am doing is of such importance that I have to do it any more. :)