Anyone else have bad anxiety about children getting older?

I have so much anxiety about my kids growing up, even though I obviously know it’s natural and going to happen regardless. I feel like they get big so fast and one day they’ll just be grown and gone and the thought terrifies me. It terrifies me that this life is limited and you can lose your loved ones any day and even if they have a perfect life one day that life will be over. I need to stop my anxiety over this, I feel panicked about it even though there is nothing anyone can do about it. Does anyone else get these feelings? How do you cope?