Do you have the botanical name for the plant? It looks to me like night blooming jasmine (Cestrum nocturnum) which isn't really a jasmine at all.
If it is then it's a tough plant and should come back.
I would keep growing it in the sunny window and let the soil dry a bit between waterings.

-Robert

Here is a link that might be useful: Is this your jasmine?

I believe so - thank you so much.
Will do...

Yay! I hope it blooms for you soon. The scent is quite powerful at night...just F.Y.I. :)

-Robert

Yeah that's a Cestrum nocturnum to my eyes also. Did you keep the soil too wet? That looks like a severed died back. You can tell when a cestrum needs more water --it'll look droopy -- but after a good drink of water it'll perk back up right away. I would keep it a bit on the dry side now that the cool weather is here.

Agreed with Robert; it'll bounce back because it is a super vigorous plant.

My jasmine was also not growing, I added aluminium sulphate in soil(even before checking ph as it was already dying)and it started growing. Now I have bought a ph meter to monitor it's ph and check the ph of other plants soil too.