Sleep issues, please help!!!

So after following Dortania guide, everything seems to work, and I like the performance of my hackintosh, but there is one problem which is SLEEP. my laptop sleeps for a while, but can't sleep completely. Back then when I was using DSDT which this group discourages. All I have to do is to change all the return of the _PRW Method from GPRW(0x6D, 0x04) to GPRW(0x09, 0x04)
Now, how do I implement the same thing with SSDT to fix my sleep issue? I have mapped my USB already, and power management is working well. Any other solution would also be welcome.

My Specs:

Thinkpad T480s

Core i5 8350U KabyLake

24GB RAM / 256 NMME drive

Intel UHD 620

Latest Opencore Boot Manager

Method (_PRW, 0, NotSerialized) // _PRW: Power Resources for Wake { Return (GPRW (0x6D, 0x04)) } //This version fixes the sleep Method (_PRW, 0, NotSerialized) // _PRW: Power Resources for Wake { Return (GPRW(0x09, 0x04)) }