Hi scb175,
I’m glad it’s better as well … and any faint remaining smell should continue to diminish.
Memory foam is sensitive to temperature, humidity, and the length of time it is continuously compressed over the course of the night and all of these can change its firmness level and how it feels and responds during the night so what you are describing is a normal part of the feel and response of memory foam. This is one of the things that makes memory foam different from other types of fast response foams.
There are also many different types of memory foam and each one has its own unique properties and responds to all of these “influences” in different ways (see post #9 here and post #8 here).
Phoenix