I will google the battery ie :
AW IMR 18650 specifications
Then read
through the links to find out the relevant information .
If you post what betteries you have then I (and others) can have a look too .
Please research all about sub 1 Ohm
vaping before taking it up .
Also get a multimeter and learn how to use it .
Again , I doubt there really is much there in the sub ohm that isn't there at 1.2 Ohm .
At 1.2 Ohm you can use a safety fuse to help protect against the bad things that can happen .