I am glad you were able to get back into your phone. It has been four days for me. I did exactly what you said if the time reduces, than that is the correct pattern, wait 4-5 hours when the next time is up. However, this did not work for me. I am 1000% sure I am using the correct pattern on my phone. I wish Samsung would fix their security issues with the remote unlock to make it accessible again. My photos are the only thing not backed into the cloud. I am back to waiting another 24 hours. I think the recent upgrade is causing an issue. I am now using the phone in safe mode to enter the pattern with no luck, and I go really slow. I wish Samsung would allow us to remove the timing when our phones are locked out. 
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