Hi MarinaraBoss.
If it’s true that the WinkBed is too firm, a topper may be an adequate solution to get you the comfort and support you need. To me, it sounds like you’re not sinking deeply enough into the mattress layers. As a combo sleeper, it is usually wise to choose a comfort layer that is a little thinner than your “deepest” sleeping position would normally require (typically side sleeping) and then choose a support layer underneath that helps you to sink in a little extra when you need it. A middle layer or “transition layer” can be especially useful for those who sleep in multiple positions and it can help you to sink in enough to help with pressure relief and also help keep you from sinking down too far and causing back issues. Innerspring designs that are more conforming like pocket coils or offset coils or different foams that are softer on top and become firmer faster when they are compressed (such as latex) also make very good choices here.
I would suggest trying to troubleshoot with a 2" topper to see if any of your pressure points are relieved. There is an excellent post about toppers, including a few posts that it links to, in post #2 here.
NikkiTMU