Don't be so stressed about the estimated processing time. It is very inaccurate. Totally useless. Mine is still showing 10 months and I will have my interview in 3 weeks. Before that it was randomly changing (10, 5, 9, 7, 11, etc). The same has been reported by many others. Stay calm. There is nothing you can do about it. You will receive the letter informing you about the interview when you least expect it. Good luck.