My ex and I were divorced when daughters were 3 and 1.
At that time...he had them one nite a week (Wednesday) and from Saturday afternoon until Sunday afternoon.
They are now 12 and 14...and he still takes them from Saturday until Sunday....lots of phone calls in between....
It took YEARS...but my EX and I are able to communicate as parents....truly a blessing for all involved...ESPECIALLY our daughters.