Space
Over zealous grandparents, chomping at the bit to get their hands on the grandkids can sometimes find themselves out in the cold when the parents begin to distance themselves. Rather than repeatedly texting, calling, and knocking on the door to try to visit the child, grandparents may want to step back and give the parents some space.
I know it's easier said than done, especially when there is a new baby, but it truly is for a grandparent's own good. In other words, it doesn't take much to alienate the parents these days, so grandparents best pay attention to the cues and accept and respect the parents' wishes otherwise future visits may be non-existent.