I've had my snake plant for about four months now and it's finally showing new growth—a tiny leaf just popped up

I've had my snake plant for about four months now and it's finally showing new growth—a tiny leaf just popped up! I kept it pretty dry at first because I was nervous about overwatering, but I think I actually underwatered it those first weeks. Now I'm watering every 3-4 weeks and it seems much happier. Has anyone else noticed their snake plant just sits there for ages and then suddenly springs to life? I'd love to know if I'm just being impatient or if that's normal.