Thrives outdoors in direct sunlight in zones 9-11. I live in Tucson, AZ. I put my Crepe Jasmin outside. In one day, the leaves were burnt and wilted. Are you certain your information is correct?
Anytime you move a plant from indoors to outside, it must be acclimated to the brighter light. You can start with the plant under a tree, then move it each day to a location with more and more sun. Do this for 7 to 10 days. The Florida article says it grows in full sun to shade. In your location, you may want to give it some shade, especially in the afternoon.
https://www.gardeningknowhow.com/ornamental/shrubs/crepe-jasmine/growing-crepe-jasmine.htm
https://gardeningsolutions.ifas.ufl.edu/plants/trees-and-shrubs/shrubs/crepe-jasmine.html
This plant was growing well for Summer and it is indoor now for winter season. I have placed it near a sunny window. It is loosing leaves. I tried to add Amonium Sulphate and I don't think it helped much. I recently added Citrus tone fertilier and not sure whether that is helping or not. I am attaching a pic below. Please let me know how to save this plant. I saw some white stuff and sticky leaves and used neem as well. Let me know whether there is any way to save this plant.
Losing leaves when bringing a plant indoors is normal due to the lower light levels, humidity, etc. It is not necessary to fertilize a plant during winter's rest.
Continue to water when the soil begins to dry and reapply Neem oil once a week till the pest is no longer visible. When overwintering plants, the goal is to get them through the winter; do not expect flowering or a lot of growth. After the threat of frost has passed in spring, you can move it back outside. Here is more:
https://gardeningsolutions.ifas.ufl.edu/plants/trees-and-shrubs/shrubs/crepe-jasmine/
https://www.gardeningknowhow.com/ornamental/shrubs/crepe-jasmine/growing-crepe-jasmine.htm
My crepe Jasmine froze on an unusually cold night. Most of the leaves are dried up but a few are ok. Should I trim it? If so how much?
If your crepe jasmine got hit by frost, then wait until late February to mid-March before pruning to avoid more cold damage. Once the risk has passed, trim dead or damaged branches to boost airflow and light. If it’s really bad, you can cut it close to the ground in spring to encourage fresh growth. After pruning, keep up with watering, mulch to protect the roots, and watch for pests or disease. With a little care, it should bounce back just fine!
Here is an article that will offer you more information on their care:
https://www.gardeningknowhow.com/ornamental/shrubs/crepe-jasmine/growing-crepe-jasmine.htm