No1Farang

I'm going to be travelling in Thailand when my next 90 day report is due. It should be done by the 29th August in Koh Samui where I live. But I'm going to be away, in Thailand for the entire window of doing the report. The online reporting sometimes works and sometimes doesn't so I can rely on working this time as it probably won't work. So my questions are: Can I go early to the Samui immigration office which would be before the 15 days before tolerance? Or can I do this report in a different immigration office, maybe Udun Thani? Thanks in advance for helpful replies.