Super liquidation - edition unfortunately too soft

Have this requirement initially bought for the sofa bed, but it should. In 4 weeks on my new box spring
Before that, I slept very well on a Irisette-Matrazte in H3; sometimes me but body parts have fallen asleep, so I thought she was better off with 65 kilos of weight with H2.
Unfortunately, this is not so. Man sinks. The foam is simply too soft for me. Unfortunately, I now stand up in the morning with extreme back pain.
Before the new bed comes, I'll get me a different edition.