"Followers of advaita like Pradip or Milind would say...."
Yes, they are right.
"But i want to know, whether this jiva is the same as subtle body or not?"
No, Jiva is not same as subtle body. Subtle body consist of Indriya and Antahkarana:
(Quoting from Vivekachudamanai)
96. The five organs of action such as speech, the five organs of knowledge such as the ear, the group of five Pranas, the five elements ending with the ether, together with Buddhi and the rest as also Nescience, desire and action - these eight "cities" make up what is called the subtle body.
Here Anthahkarana which is the combination of Mana - Mind , Buddhi - Intellect, Chitta - Consciousness and Ahamkara - Ego is more subtle than subtle body:
93-94. The inner organ (Antahkarana) is called Manas, Buddhi, ego or Chitta, according to their respective functions: Manas, from its considering the pros and cons of a thing; Buddhi, from its property of determining the truth of objects; the ego, from its identification with this body as one’s own self; and Chitta, from its function of remembering things it is interested in.
Now, talking about Jiva - it is the Upadhi
superimposed on Buddhi due to ignorance:
196. The Jivahood of the Atman, the Witness, which is beyond qualities and beyond activity, and which is realised within as Knowledge and Bliss Absolute - has been superimposed by the delusion of the Buddhi, and is not real. And because it is by nature an unreality, it ceases to exist when the delusion is gone.
200-201. Previous non-existence, even though beginningless, is observed to have an end. So the Jivahood which is imagined to be in the Atman through its relation with superimposed attributes such as the Buddhi, is not real; whereas the other (the Atman) is essentially different from it. The relation between the Atman and the Buddhi is due to a false knowledge.