Dell Latitude 5420 S0iX Sleep

I just purchased this laptop used and installed Fedora 42 on it. It’s a Dell Latitude 5420 with an i5-1145G7 processor. The laptop does not support S3 sleep, only s2idle. It successfully enters and resumes sleep when the lid is closed, but the battery drains rapidly. I have not done any proper benchmarks but I was at around ~60% battery life last night, and when I opened it this afternoon it was completely dead. After running the S0ix self test tool , I got the following output:

...
Your system supports S0ix substates, but did not achieve the shallowest s0i2.0
    
Here is the S0ix substates status: 
Substate   Residency      
S0i2.0     0              
S0i3.0     0     
...
Below are the deeper S0ix substate required IPs did not show YES:
    pmc0:            USB2PLL_OFF_STS    Required               
    pmc0:            OPIOPLL_OFF_STS    Required               
    pmc0:                CSME_PG_STS    Required               
    pmc0:                xHCI_PG_STS    Required               
    pmc0:                 GBE_PG_STS    Required               
    pmc0:               xHCI0_D3_STS    Required               
    pmc0:          CPU_C10_REQ_STS_0    Required               
    pmc0:    MPHY_Core_DL_REQ_STS_16    Required

Full output here . Unfortunately I have no idea what this means.