I gave up lessons as an intermediate student (I took some lessons as a kid, and some as an adult) for about 15 years and just played for fun sometimes, and for a few years, I gave it up altogether. It took a couple months to get my skills back, but they did come back fine, although I did develop a bad habit of looking at my hands too much when playing in those intervening years. Now that I'm taking lessons again, I am much more advanced than I was before. So imo, if you are like me (are you? I have no idea how universal my experience is) if you just play for fun, you won't lose too much. It doesn't seem that I lost any of my ability to read music and I still had the hand coordination and knew how to pedal etc - none of that seemed to get lost. I was just rusty. maybe the more advanced someone is, the more they lose. I was at a level that would be most of the way thru most method books, I'd guess. So I think you will be fine on your own for awhile and hopefully you are more disciplined than me and not develop too many bad habits. If you get feedback once in awhile from a musician friend, probably you won't.