Sure, I'd be happy to help you plan your 3-day itinerary in Ooty!

Day 1:

• Start your day with a visit to the beautiful Botanical Garden. It is spread over 55 acres and has a wide variety of plants and flowers.
• Next, head to the Doddabetta Peak, which is the highest peak in the Nilgiri Mountains. The view from the top is breathtaking and definitely worth the climb.
• After that, visit the Ooty Lake, where you can enjoy boating and take a leisurely stroll around the lake.
• End your day by visiting the Tea Museum, where you can learn about the history and production of tea in the region.

Day 2:

• Begin your day by visiting the Pykara Waterfalls, which are located about 20 km from Ooty. The falls are surrounded by lush greenery and offer a serene atmosphere.
• Next, visit the Government Rose Garden, which is home to over 20,000 varieties of roses. It is a great place to relax and enjoy the beauty of nature.
• After that, head to the Wax World Museum, which houses wax statues of famous personalities from India and around the world.
• End your day by visiting the St. Stephen's Church, which is one of the oldest churches in the region and has beautiful stained glass windows.

Day 3:

• Start your day by visiting the Avalanche Lake, which is located about 28 km from Ooty. The lake is surrounded by dense forests and offers a peaceful environment.
• Next, visit the Tribal Research Center, which showcases the culture and lifestyle of the indigenous tribes of the region.
• After that, head to the Thread Garden, which is a unique garden that features flowers made entirely out of thread.
• End your day by visiting the Toda Huts, which are traditional dwellings of the Toda tribe. You can learn about their culture and way of life.

I hope this itinerary helps you plan your trip to Ooty!