That much time with Eleanor would have killed him sooner.
Henry Hyde used to say “A woman made me a conservative. Eleanor Roosevelt.”
There’s a valid reason that Hillary identifies with her.
Roosevelt had been having an affair with Eleanor's secretary Lucy Mercer but Eleanor discovered their letters.
He was planning on leaving Eleanor for her but his mother said she would disown him if he did and he and Eleanor patched things up...somewhat and she forbid him any contact with her.
Shortly afterward he contracted Polio or whatever disease it was and Eleanor became his very controlling nurse.
It was his daughter Anna that got Lucy and Roosevelt back together after Bethesda she was now widowed and Roosevelt was very relaxed in her company.
It was Lucy that was with Roosevelt in Warm Springs when he died, not Eleanor.
When Eleanor found out what Anna had been doing she blew a gasket.