First Day in Mysuru
Well at first you can visit Chamumdi Hills where you can pray to 'Chamumda Devi' it is one of the most beautiful tourist attraction in Mysuru. Then you can visit to Mysuru Zoo on the way You can visit Wax Museum, Horror World, Sand Museum, Shell Museum.
You can cover all this point in 1 hour. Then you can enjoy Zoo where you can see different types of animals. To cover zoo you will required minimum 3-4 hours. Then you can have Lunch then you can visit Mysuru Palace where you will require minimum 1-2 hours. Then you can visit the Tipu Sultan's fort and also his tomb. At last the main attraction of Mysuru is Brindavan Garden where you can enjoy the water fountain at night.
You can visit all this places in 1 day. After that you can halt one night there and in morning you can go coorg.
Coorg:-
After Mysuru you can go to Coorg on the way you can half of the point.
First you can visit Nagarhole National Park And Tiger Reserve. Then you can go to Tibetan Golden temple where you can take some good pictures and can spend some good time with your friends and family. After that you can visit 'Fish Point'. After that you can visit one of the most important point in Coorg i.e Dubare Elephant Camp-Resort-Junglelodges where you can do River Rafting and then can visit Elephant Camp well when I visited there where 29 Elephants it will worth your time. After that you will enter Coorg you can enjoy Sunset 🌄 at 'Raja's Seat'.
And then you can rest you can book hotel or you can book home stay. Well I booked the Home stay and it was very good if you are visiting in large group book the home stay you can save money also and can enjoy with your family also.
Second day in Coorg:-
You should wake up early and should head first to 'Tal Kaveri' there are some of Dams and Waterfall on the way you can enjoy and can make your day memorable the 'Tal Kaveri' 3 hours drive so adjust your time accordingly. Then you can visit the 'Madikeri Fort' you can see some historical artificate.Then you can visit Abbey Falls. Then you can visit Nisargadhama where you can take some good photos and outside that you can purchase spices of Coorg and Coffee of tea and can also enjoy some games there.
If you love drinking Wine you can enjoy there some of that in very cheap rate.
Well if you have an extra day you can rest and can enjoy the beauty of nature it will be worth it and you can also plan small get together with your family.