I'm applying for the I-485, but would like to apply for the I-765 and the I-131 at a later time. Would there be a fee if I do so? Is there a time limit on delaying the I-765 and I-131 application?My attorney is going to file the I-485, but they are going to charge $300 to file the I-765 and another $300 for the I-131. That is why I was wondering if I could do it at a later time for free, after my attorney have submitted the I-485. Is this okay?