@gigi32,
Our granddaughter came to us after I had been transplanted for 3 years. And so, it was our son and daughter-in-law who were willing and able to monitor when it was safe for us to visit the baby during those early infant/toddler shots and sniffles. As she grew to a toddler, she knew all about washing hands and handcleaner which she called, "Han(d)itzer". With only one grandchild, it has been easy for us to rearrange schedules when sickness strikes.
Enjoy your new life with those beautiful grandchildren!