Is it possible to stay in Thailand for 6 months with a METV visa through repeated extensions and border runs?

Hello good people, in need for your help.

We are traveling with our 2 years old baby, planning to travel and relax in thailand for 6 months. We are going to apply for the METV visa.

As we are traveling with a baby and hoping for a minimum visa hassles, does this scenario makes sense?

Enter the country, stay 2 months and extend for extra 30 days, than get out of the country via Cambodia and enter at the same day to get another 2 months, which will be extended again for 30 days? Will that work out? Is there any risk for not getting a second 30 days extension?

Thank you for helping out! 💖