Hi smmimp14,
I switched your post to your previous topic with the same title.
There really isn’t a great deal I can add to my previous replies in this topic (particularly post #2 in the topic) so I would encourage you to reread them. Don’t forget that you are the only one that can feel what you feel on a mattress and that the DIY process will generally involve some trial and error and experimentation because the only way to know for certain whether any combination of layers will work for you with any certainty will be based on your own personal experience.
While it’s not possible to “diagnose” more complex mattress comfort issues on a forum with any certainty because there are too many unique unknowns, variables, and complexities involved that can affect how each person sleeps on a mattress in terms of “comfort” and PPP (Posture and alignment, Pressure relief, and your Personal preferences) or any “symptoms” they experience … there is more about the most common symptoms that people may experience when they sleep on a mattress and the most likely (although not the only) reasons for them in post #2 here.
There is also more about primary or “deep” support and secondary or “surface” support and their relationship to firmness and pressure relief and the “roles” of different layers in a mattress in post #2 here and in post #4 here that may also be helpful in clarifying the difference between “support” and “pressure relief” and “feel”.
These posts are the “tools” that can help with the analysis, detective work, or trial and error that may be necessary to help you learn your body’s language and “translate” what your body is trying to tell you so you can identify the types of changes that have the best chance of reducing or eliminating any “symptoms” you are experiencing … at least to the degree that any symptoms are from your mattress rather than the result of any other circumstances or pre-existing issues you may have that may not be connected to a mattress.
In order to guess what may be happening or the types of changes that may be helpful I would need to know the specific layering combinations you have tried (starting with the first one) in the order that you tried them and the specific “symptoms” you experienced when you slept on each of them and how each of your symptoms changed (got better or worse) relative to the previous combination you tried.
Phoenix