A decrease in ex-JW activity is probably a healthy sign for most individuals. Once one has ‘come to grips’ with their experience (however long that takes), they move on.
For me, I’ve stayed “active” longer as I have an academic interest. Some are on this board for the interpersonal interaction …. it is, to some degree, a coincidence that they are ex-JWs.
Fading from ex-JW activity is natural and healthy. Just my two cents.