It's a 90 day report 🤣 do you have your dates mixed up?? You can apply 2 weeks before and 1 week after the due date. If you are leaving Thailand it's up to you if you don't want to report. It starts again as at 0 when you return. Should be no issue
Your question is confusing ??? So you have a DTV and you stayed in Thailand 180 days and have gone to Australia where you have stayed more than 180 day. Now you want to return to Thailand and get a new 180 day stamp. That's how it sounds to me.
Your DTV is for 5 years up to 180 day stay at a time. You must leave or apply for an extension to reset the 180 days. But you can go out and stay out as long as you want same day return or as long as you want. When you return you get a new 180 day stamp. It sounds like you have no issue you just think you have