Can I cross the border by car multiple times in a calendar year and still qualify for visa exemptions in Thailand?

Hello guys so i have a question regarding my stay in Thailand. I came to thailand on stv visa in july 2022 (90 day without possibility of extention) then I crossed the border by a car to get the 45 exemption + 30 days extension. After that i crossed again the border in the end of december to get again 45+30 extention. The extention will end in the middle of march.

So totally i got 2 times 45 days exemption + 30 days extention in 2022 year.

So my question is:

1) right now will i need to cross the border by a plane? i cannot find the information if i can cross the border by car twice a calendar year or just a year?

2) after i will enter thailand again (land or plane) will i be able to get the 45 days exemption + 30 days extention? I found the info that it will end in the end of march.

Thank you for all your help🙏🙏