Places:
Mawphlang, Mawlynnong, Nongriat, Mawlyngbna, Sohra, Bada Pani (Umiam lake), ...
Check out this itinerary.
https://www.kipepeo.in/trips/offbeat-meghalaya/
Kipepeo is a responsible tourism company, and if you call them, they can help you with your trip.