So है must be used twice here?
Yes. We could try shortening the sentence to use only one hai but it sounds weird.
It's like "karna".
Sometimes you put it in and sometimes you don't.
I'm still confused with main or mujhe. I know mujhe is oblique case, but I don't see postposition here. Can anyone help? Tks
Mujhe is short for mujhko. Mujhko has the postposition integrated into the pronoun. Same with mujhse.
I'm still learning so i might have it wrong but this line of thinking has worked for me so far
मुझको instead of मुझे is wrong?