Adult children play an important role in caring for elderly parents, and children and parents tend to move closer to each other to facilitate the caregiving and mutual support. Despite the existing evidence on proximity-enhancing moves following health events, we lack knowledge about the timing of such moves and changing patterns of intergenerational proximity around the parents’ health shocks over a longer period. We apply an event study approach to data from the Health and Retirement Study (2004-2014) and plot the dynamic treatment effects of parents’ first onset of cognitive impairment and functional limitations on parent-child proximity. Preliminary results show evidence of both anticipatory moves and delayed moves, suggesting that relocation decisions of parents and children are not a sudden change but a gradual process that is realized over a broader time frame. Studying these migration dynamics will advance our understanding of intergenerational relationships and their importance for late-life caregiving.