Hello Saran,
Language can be a big challenge. I cannot read or write Thai. If we were to meet, then we can speak Thai together. Sorry to hear that you are tired. It was raining here too. I think what you meant to say is that you and your son are in Korat and you have a daughter in Bangkok. Is this right? Distance is a big challenge. I don't have an answer for that. I have a business in Bangkok, I cannot just move to Korat. You have a son in Korat [perhaps a business too!] you cannot just move to Bangkok.....so how do we solve that problem? Take care, Mark