SSM is defined as having a desire gap that bothers the HD partner -- that says nothing about frequency.
A person could easily go a week without food as long as they get water.
However to go for 3 months without any food at all, I think most people would be dead.
The "starved" in sex starved means your getting much less than eating every two days. Perhaps if it's weeks and months at a time and that's the time in between encounters, that would indicate "starved"...