I know the rules I've been doing it for some time now. It's supposed to be 3 months not 2. It actually states 2 also in the paperwork and on the visa applications
It's actually supposed to be 3 months. I've always done 3 months. Never had a problem. I missed it by a few days so had to wait until them says was finished them could do it. Do 3 months and maybe change the office you go to