Lots of couples hit phases where sex drops off. New baby. Work stress. Health stuff. Medication side effects. Grief. Or just... life. The problem isn't the dry spell itself. It's when the rest of the intimacy goes with it.
When touch starts feeling like a request, people pull back. When pulling back feels like rejection, distance grows. Pretty soon you're sleeping on opposite sides of the bed wondering what happened.
The fix isn't to force anything. It's to rebuild closeness that has no strings attached so both of you can relax again.