My Serissa is doing well indoors, losing a few leaves but there's some new growth to match it. It's planted in some kind of moss and peat combination. But... every time I come home to see how it's doing, I find a new bug on it. First it was a small mite-looking thing. A few days ago it was a slug. Today I found a small pill bug and a very small centipede-looking insect. The tree is not showing any negative signs... Should I repot it? And should I wait until the beginning of spring?