Can I live in Thailand for 6 months with a multiple-entry DTV Visa while working remotely?

Hello! I would like to live in Thailand during the coldest months in my country (October to February/March, so like 5-6 months) while still working (I’m a freelance translator) and I was wondering if I could do this with a DTV without much of a hassle. Would it be ok if I go back home and don’t come back for 6 months? Correct me if I’m wrong, but this would mean my 180 days is automatically refreshed when I come back. And I don’t need to file anything when I leave and come back, right?

Also, since it’s a multiple entry visa, I was wondering if, during those 6 months in Thailand, the following scenario is ok (valid and without extra paperwork) :

After 3 months, I go to China, for example, and re-enter after 1 week. My 180 days is refreshed and could spend 6 more months but only stay 3 more. Then I go home and re-re enter after 6 months.

Sorry if my questions seem obvious hahah, I might be overthinking but I’m not used to visas and long-term travel so I want to make sure I understand! Thanks!