there are spectacular long term care facilities. Google them. We just visited a gorgeous facility here in Chiang Mai. 1 on 1 24 hour care was $3000 a month. Or do what I did. Get full time help. Our guy comes in at 9 and leaves at 6. We have a part time help some evenings. A 3rd option would be live in help. If your condo doesn't have room buy a small one in the building and your help live there.
Immigration visa requires you provide proof of 65,000 thai baht/person a month if you are using means testing. Thats just under $2000 a month US.
We live very comfortably with full time help, car lease and a house (rental) on $3000 a month. In US terms we live as well as my brother and his wife on $130k a year. And they dont have full time help.
If someone is pirating your electric hire an electrician to set up a separate line and meter. Then create a separate account with the electric company. This was a popular scam a couple years ago and the thai government did put some laws into effect. I have no idea if they are enforced.
If your lease is a flat rate 2000 per month fire up the AC. I have 200 sq meters 4 bedroom and run lights AC, etc continuously. My bill has never exceeded 2000