@Lianne *******
yes, you have to go to an immigration office to do the first 90 days report every time after entering the country. People on longterm visas can do theirs online from the 2nd one, but with a DTV you will either leave the country within 180 days or go to an immigration office anyway for extension.
If you do an extension I guess the 3rd one can be made online (or am I thinking wrong? 🤔)...