Looks like you've used garden soil in this little pot. Also looks like you've underwatered. Simply water again (if I am seeing this correctly), allow to drain, dump the water out of saucer, keep as close to a south facing window or on the patio UNDER a roof, no direct sun.
If you have overwatered this plant (kind of looks the same) it is because of the high clay content of your garden soil. Potting soil is sterilized. The garden soil will have a few fungal spores, bad bacteria and/or eggs of some insect that normally is kept in check by beneficials in the body of the garden soil.
Potting soil actually has very little soil soil mixed into the medium. Hard and fast rule in the garden world, anything planted in a pot or a pot like container has to be planted in a sterilized medium, such as bagged potting soil. It is very much a hassle and stinky to try to make your own potting soil.
Make sure there is no fertilizer added or water holding gimmicks such as sponges or gels. Just soil in that pot over the drainage hole. No rocks or gravel below the soil and above the drain hole...will ruin the drainage.
I would transplant this plant into the same pot but dump out the garden soil without bothering to clean the roots. Plant in fresh potting soil. Careful about the roots as this plant is just beginning to become established. Don't worry about leaving the garden soil the roots have claimed. Eventually, there will be mostly potting soil in your pot.
You will need to add fertilizer, I suggest good old Osmocote 14-14-14 all purpose extended release...use half the recommended amounts and number of applications. Just sprinkle on top of your potting soil. After transplanting and after finding out what this plant was used to in its previous life. If your new plant has already been fertilized you need to know when and how much and what was used before starting your own fertilizer program. This plant is normally used as an annual, meant to be replaced each season. India means this guy will be a perennial that you need to chop back to keep young looking and not scraggly.
From what I've learned trying to help others in India is that it is tough to find potting soil. Is that correct?
Dusty Miller care