Hello, hope that you are well. Unfortunately, I'm afraid that you might not have a new one before December. Sometimes its takes longer than a month and half. Best of luck.
(Are you sure you did not present USCIS with a fake birth certificate? Just kidding.) I-90s currently are taking many, many months. All processing times are listed at the USCIS website www.uscis.gov Just to make sure you won't be disappointed, make sure to add another 2 months to whatever time frames they post. You will then know what to expect and will not grow impatient or disappointed.
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