Hi Cajen9669,
Thanks for taking the time to share your initial comments and feedback … I appreciate it.
Yes … there will be an initial break in and adjustment period for any new mattress over the course of the first few weeks where the cover loses any of its initial stiffness, the foams lose any of their initial “false firmness”. he mattress materials and components settle a little, and your body gets used to the feel of a new sleeping surface that is different from what it is used to although the length of time it takes can very from mattress to mattress and from person to person (see post #3 here).
Memory foam is also temperature sensitive so there can also be some other factors such as room temperature and humidity or the type of mattress protector you use that can also affect the firmness of a memory foam mattress as well (see post #2 here).
Phoenix