How can I keep Japanese as a part of my routine?

I have been trying to learn Japanese for a couple years and I have this habit where I get the motivation to do some learning for about a few weeks to a month and then go back to doing nothing for a couple months. There was one time where I went a year without any progress.

I'm tired of doing this because I haven't gotten any good progress. I want to know how any of you keep your Japanese learning as a routine and how you stay motivated to keep learning.

Any answers will be appreciated. I have had learning Japanese as a goal for a while and I don't want it to end up being something I give up on. Thank you.