Hi Tyson,
Did you try this … and did it make any difference for you compared to using the memory foam topper over your 24 ILD Talalay layer?
You’ve probably read this already but just in case … post #2 here and the topper guidelines it links to may be helpful in choosing the type and thickness of a topper that can work best for you.
Brooklyn Bedding where you purchased your mattress carries several types of memory foam and they have an exchange and return policy as well that may be helpful.
Other than that and with your lower body weight it would make sense to try a 4 lb memory foam topper that is a little softer but since any specific density of memory foam may have a range of firmness levels along with different response times and temperature sensitivity (all of which can affect the sensation of softness) you would need to talk with an online retailer or manufacturer about the specifics of the memory foam they carry.
In addition to Brooklyn Bedding … some of the other better sources of memory foam toppers I’m aware of are listed in post #2 here.
Phoenix