Last year I replaced the front piece of foam on the upper bed with high
density foam and we have a 1" thick piece of memory foam that we put across
the bed where are hips are, it's really comfortable now , the high density
foam was pricey but worth it

--
Twenty years from now you will be more disappointed by the things that you
didn't do than by the ones you did do. So throw off the bowlines. Sail away
from the safe harbour. Catch the trade winds in your sails. Explore. Dream.
Discover. ~ Mark Twain