The actress is only able to return to India for the production in January, according to Mumbai Mirror.
A source told the paper: "Ranbir [Kapoor] too was supposed to shoot scenes with Priyanka in the next couple of days.
"However, since she isn't coming back to the sets of Barfee for the time being, Ranbir has decided to spend all that time promoting his next film Rockstar.
"Ileana [D'Cruz] has gone back to her parents' place to spend some quality time with them. Still, Priyanka's cancellation of dates has inconvenienced Ileana quite a bit.
"How much can Anurag [Basu] tell her? Beyond a point, he too had to stop asking her. Priyanka was supposed to return last weekend. The shoot was supposed to start by the end of [October] as planned."
In May, it was reported that the delay was halted because of rivalry between co-stars Chopra and D'Cruz over the size of their respective roles.
The model turned actress has said that playing an autistic woman in Barfee has been the most difficult role of her career.