It can be tempting to sell when there does not seem to be much point in the near future, but I believe that is always how it feels during a lull. To me if you no longer enjoy the game, it just is not worth playing, but you can still hold tokens as an investment with the hope it will continue to grow, and their value will improve.
Either way, good luck in your journey!
I've "collecting everything" Splinterlands stuff for a while. Sometimes you have too much cake, and you just want a tiny cupcake. The SPS I will continue to hold will be a bunch of cupcakes.