No advice, just my experience. I don't speak to my kids at all when they are with their mom and vice versa (we alternate weeks). They don't seem to mind at all. I know a friend who separated when his kids were 4 and 2 (now 10 and 8) and they almost never call and when they do, the kids don't like it because they miss the other parent even more.
M39 D6 D3 (at S) S 2014-09 D 2016-09
"You can't start a fire sitting around, crying over a broken heart" - Bruce Springsteen.