We did a lot for our son, DIL and two GC when the GC were younger.
Collected them from school twice a week, gave them tea, took them to dancing and football classes etc, had them stay overnight babysitting on occasions.
When Covid hit, it coincided with GD just starting at secondary school, her brother is two years older, so apart from the pandemic restrictions, they were growing up and not needing us as much.
We have never really got back to our original quite close and useful relationship. GC now 18 and nearly 16, we don’t see a lot of them or their parents although we only live a few minutes walk away. We come in handy to feed the Guinea pigs when they go on holiday.
But they are all busy with their lives, and we are just not needed like we once were.
Our DD and family live in Australia, so have never had the same connection with them as with the local lot, and it is a bit sad, but that is just how it is.