I have seen variants on this topic around, but let me start a new line. My wife is in a different place from me, but equally on the spectrum, just in a different quadrant, as it were.
Last night, as I have heard others here, she was lamenting that she feels she has lost all ability to be in special interest mode - there is nothing, the old ones are ghosts and dry bones, nothing new is coming in.
This I for one have nbever experienced - closest I come is times when I have been cut off from what I need for my interests for a week of alleged vacation. But those who have been there - what is the prognosis? Does it come back on its own, can it be jumpstarted?