What LTR and DTV both mean by remote is work that you are doing remotely from within Thailand. Your work would not qualify under that definition.
You could possible to go the Thai embassy at Savannakhet and apply for the 1-year multiple-extension marriage visa. You would need to make an appointment in order to apply for this. You would also need to show 400,000 baht in a Thai bank account in your name only.
This visa is valid for 1 year and would allow you to enter Thailand an unlimited number of times while it is valid, and receive a 90-day entry stamp each time you enter.
or you can apply for a 180 day extension on each entry, so 360 days total. But no one knows how that will work yet because the visa is so new. Leaving and returning (all in the same day) is the surefire way for now.
immigration officers absolutely do not have discretion on randomly giving days on an entry stamp. The law states how many days you'll receive or your visa does. The officer can't just decide to give you some random number of days.