Hi guest01,
I don’t know the specifics of the layers in your mattress and I can’t feel what you feel on the mattress so I don’t have any specific suggestions but based on your limited comments it sounds like your mattress could be too firm.
If this is the case then the two options you would have to “fine tune” your mattress would be to exchange your layers for softer ones (exchanging layers that are closer to the sleeping surface will have a bigger effect on the firmness of the mattress than exchanging the deeper layers) or to add an additional softer topper.
If you can’t exchange your layers for softer ones then If the only issue with a mattress is that it is too firm and there are no soft spots or sagging in the mattress (which of course there wouldn’t be with a new latex mattress) then a good quality topper can certainly be an effective way to add some additional softness, “comfort” and pressure relief to your sleeping system (even with a memory foam mattress) but the only way to know for certain whether a specific mattress/topper combination is a good “match” for you in terms of comfort, firmness, and PPP (Posture and alignment, Pressure relief, and your own Personal preferences) is based on your own careful testing or personal experience on the combination. If you can’t test the combination in person then there will always be always some risk and uncertainty involved in adding a topper because the specifics of the mattress itself along with your own body type, sleeping position, and preferences can affect which specific topper would be a suitable choice on any specific mattress.
There is more information about choosing an online topper in post #2 here and the topper guidelines it links to which along with a conversation with a reliable and knowledgeable supplier (that can provide you with good information about how their toppers compare to each other or to other toppers they are familiar with that are available on the market) can help you use your sleeping experience as a reference point and guideline to help you choose the type, thickness, and firmness for a topper that has the least possible risk and the best chance for success. It also includes a link to a list of some of the better online sources for toppers I’m aware of.
A good exchange/return policy can reduce the risk of an online topper purchase so if you aren’t confident that a topper will work well for you I would always make sure you are comfortable with the options you have available after a purchase just in case the topper you choose doesn’t turn out as well as you hoped for because the the only way to know for certain whether a mattress/topper combination will be a good “match” for you will be based on your own careful testing on the combination or your own personal experience when you sleep on it.
Phoenix