We have a new Emma mattress (like an Eve/Casper etc) , which DH loves but I’m waking in the night as I find it hot and a bit sweaty! Before we give up and revert to a super-heavy sprung mattress (super-king), has anyone used a wool topper (and wool duvet) on one of these bed-in-a-box or foam mattresses and overcome the overheating problem? Thanks.