My kundalini awakening destroyed my sleep for a while before it sort of settled down. I think meeting your twin is one of the fastest ways to trigger it, and when that energy rises up through your spine and all your chakras, you can forget about a good night’s sleep for a while.
I went from needing 8 hours to… “functioning” on 4, but not in a good way. I was exhausted but couldn’t sleep. Body temperature all over the place, pressure in my head and dizziness. The heart chakra has a tendency to overheat in twin flame connections anyway, but add Kundalini on top and you get chest pain and palpitations that wake you up.
Your body is learning to handle these new energetic loads. Eventually it adapts.