Art is not a spectator sport. You have to create. You have to do it all the time. Spending two hours on a Sunday afternoon trying to find all the parts to your easel, hunting down the paints or sharpening your chisels before you have to fix Sunday dinner is not an effective use of the time devoted to your art. You really can’t be a once a week artist.
If you want to be a better artist, then you must choose to dedicate a larger portion of your existence to art. You can’t be an artist once a week and expect to be good at it. If you practice your art more often you will become better. Do it every day and you will get very good at your art. But you say, “Joe, I can’t paint murals every day. I work in a cube.” So do I dear reader, and my favorite places to photograph are hundreds of miles from home. I can only get there once a year, at best. This is the problem with fitting Art in around the edges of your life. There is only so much time in the day. You can only be in one place at one time. You have to figure out how to fit your art into that space at the edge of your life.
I think the issue boils down to making the time for Art you like to do versus the Art you have time for.
It takes a conscious effort to be creative. Too often that part of your life is relegated to the edges. What I am advocating is the use of smaller segments of time in your life to create a complimentary form of art that makes your primary art making time more productive. An alternate creative activity would serve the purpose of a priming pump for your primary medium so when you get the time to work on what you love to work on, you need to spend less time getting yourself in the creative groove.