Not everyone wants to commit themselves to weekly lessons and daily practice. Nobody says that you should.
It is important to do what feels right for you.
Similarly, you must not resent the progress of others in the class who are dedicated and skilled.
Each student is free to proceed at a pace of their own choosing.
If you want to attend once or twice a month, that is fine providing you accept that you will need plenty of revision and your progress will be slow.