In 9 days it is possible else it takes three days to reach leh from manali and three to come back. One day of rest makes it seven. Going from Srinagar side one more day is required. Check this Delhi - manali Manali - jispa Jispa - leh Leh rest and permits Leh - nubra Nubra - pangong Pangong to sarchu, leave early Sarchu to manali Manali to delhi
Day 1: Rohtak to Udhampur (via Mansar)
Day 2: Udhampur to Sonamarag (few hours for Srinagar sightseeing)
Day 3: Sonamarg to Leh
Day 4: Leh local
Day 5: Leh to Hunder (Nubra valley) - camping
Day 6: Hunder to Pangong
Day 7: Pangong to Pang/Sarchu - camping
Day 8: Pang/Sarchu to Manali
Day 9: Manali to Rohtak That's the only way I can see a Ladakh trip fitting in 9 days... Though I would recommend adding a day or two if possible...