“Sometimes you never know the value of a moment until it becomes a memory.” ~Dr. Seuss Our son had warned us that our two-year-old grandson, Liam, might have trouble settling to sleep during his weekend stay with us. While this was a change from Liam’s usual pattern — he’d usually fall asleep without a struggle — Doug and I were prepared for the screams that ensued not long after we put him to bed on Friday night. But I didn’t have the heart to let Liam “cry it out,” as some childcare experts would advise. Instead, I invited the little guy to join us outside in the backyard, to sit…