An NA is normally attached to an active project. An active project is one that you hope to have completed with a defined time, let’s say 3 months (e.g. “cover first section of Spanish book”).
If a project is not going to get past the first NA, then it is not an active project, it is a someday/maybe.
If you are doing nothing on the Learn Spanish project, then you are doing nothing on the Learn Spanish project.
You have to renegotiate with yourself about your commitment to yourself to learn Spanish.
In old-fashioned terms, you don’t seem to have enough time in the evenings to learn Spanish. An alternative might be to get some educational CDs and learn by listening while commuting. But if this is not possible and your week is booked solid with other commitments, there actually is no time to learn Spanish.
I have found that just because a goal is worthy, that doesn’t mean that there is room for it in my life. At the risk of sounding slushy, your heart is telling you that the right priority is to play with junior, and leave Spanish until some time is freed up.