I think you did a great job and stopped to dig your hole deeper very early!
How you describe it, it sounds to me that the overtraining was not too severe and you did a good job with resting. Looks like you are feeling good now in your daily life and with training!? If sleeping is the only problem now, I would question if it is still from too much training. Poor sleep can have many causes.
I would continue to build easy volume. Monitor how you feel. But don’t worry too much;-)