Sure, here's an ideal itinerary for 3 days in Kodaikanal:

Day 1:

• Start your day with a visit to the Coaker's Walk, a scenic pathway that offers breathtaking views of the valley below.
• Next, head to the Bryant Park, a beautifully landscaped garden that is home to a variety of flowers and plants.
• After that, visit the Kodaikanal Lake, where you can enjoy boating or simply take a leisurely stroll around the lake.
• In the evening, head to the bustling local market to shop for souvenirs and try some local street food.

Day 2:

• Begin your day with a visit to the Pillar Rocks, a set of three giant rock pillars that offer stunning views of the surrounding hills.
• Next, head to the Guna Caves, a natural cave formation that is said to have been featured in a popular Indian movie.
• After that, visit the Pine Forest, a serene forest area that is perfect for a peaceful walk or a picnic.
• In the evening, head to the Silver Cascade Falls, a beautiful waterfall that cascades down from a height of 180 feet.

Day 3:

• Start your day with a visit to the Kurinji Andavar Temple, a famous temple dedicated to Lord Murugan that is surrounded by beautiful gardens.
• Next, head to the Dolphin's Nose viewpoint, which offers panoramic views of the surrounding hills and valleys.
• After that, visit the Berijam Lake, a pristine lake that is surrounded by lush green forests.
• In the evening, head back to the town and spend some time exploring the local cafes and restaurants before bidding farewell to this beautiful hill station.