From about 4, son went to his dad’s for a weekend, which was enough for each of them I think. It extended gradually to a long weekend and now a week at Xmas, Easter & in the summer. Son goes to holiday club for three weeks in the summer, and I take 2 weeks off.
The rest of the year, ex prefers to see son on a Sunday but not overnight.
we’ve managed to keep it reasonably amicable, and flex around each other’s lives.
I know the courts prefer EOW or even 50;50 but you have to do what works for you both. You’ve got 17 years of co-parenting to survive so you both need to be comfortable with any arrangements.