Hi,
yes most applicants if not all under live in caregiver program get interview for their pr application at the final stage.
you should expect to be honest and truthful when answering the questions of the interviewer then everything should be fine.
you will be asked questions related to your application so if you did not wrong or misrepresent yourself in anyway then there is no need to be nervous just relax.
one more tip for you,when asked a question just answer that exact question and do not volunteer extra information.
good luck.