I agree with Jan M.
Either you trust your Adviser or you don't. They are a professional with a code of professional conduct to uphold. Just like INZ officers, and having their own case load they too are likely to be frustrated by constant "are we there yet" questions.
Hopefully they've explained the process at the beginning and indicated if there is any material change that requires your input, that they would be in contact.
They are also in contact with INZ daily and have a good feel for how things are progressing (or not) and may even have dealt with the case officer previously and know how they work.
Trust their judgement I say.