With the current Cable damage that 3BB and AIS suffered secently (3BB not repaired yet)we are using Proton VPN to connect to the UK IPTV servers at the moment till the cable damage has been repaired. A free VPN that works well and is stable, worth a look.
You are correct. Hua Hin checks the 2 months prior as well as the 3 months after. Also checks the bank statement that you have not gone under the 400K. Scrutinized the one year bank statement in detail when we renewed in January.