Firstly, thank you so much for your detailed and objective reply. I really appreciate it. We have so far agreed during term times on alternate weekends plus Thursday nights every week. I feel that his desire to have him for a 3 week stretch over the summer is largely about hurting me but, as he is incredibly selfish, about hum wanting the freedom to go away on holiday by himself in the time he doesn’t have him. I will try to get him to consider perhaps every weekend (with flexibility if he wants to go on holiday himself) and if he is adamant that it’s 3 weeks or nothing, then follow your advise to apply for mediation. I am also still breastfeeding my son, and longer stretches away are painful (physically and emotionally) for both of us.