My MacBook Pro becomes extremely hot on sleep mode

2 years back while upgraded to OSX Sierra of My Macbook pro Retina 13" late 2012, I noticed it heated up & almost burnt while on sleep mode with the monitor closed. I had to play with for a long time & found the culprit is the Sleep hibernate mode. While with OSX Capitan, its sleep hibernate mode was 1 but after upgrading to OSX Sierra, it automatically became hibernate mode 3. I tried to change to 1 using terminal but it did not allow. Therefore I downgraded to OSX Capitan. But with Capitan, e.mail was troublesome. After OSX High Sierra is launched, I again upgraded to OSX High Sierra. Everything is nice with High Sierra, e.mail also very organised but again my macbook pro become very hot while on sleep mode. I checked the sleep hibernate mode, it is again 3. I tried changing to 0 & 25 but still same heat issue, I could not change it to 1. Any one is there who can help me how I can change sleep hibernate mode to 1 instead of 3? I am sure it will be ok if I can change to 1. I contacted apple service centre but they have no idea what to do. Awaiting support from the apple community please.Regards, Dr. Mostafa