Supporting 15 yo DS

[Crunchysprouts]

DH and I split 4 months ago and he's moved out of the family home to a flat nearby. We were married for 20 years and it was mostly my decision to split up - he acknowledged the relationship was poor, but wanted things to remain the same anyway. We've stayed amicable so far.
Our 15 yo DS lives at the family home with me Monday - Friday to keep consistency for school, but spends his weekends with his dad. We split holidays 50:50.

DS is often very moody just before his dad comes to pick him up and when I asked him on Friday if this is because he finds it hard on 'transition days', he replied "I just wish I lived in one place". My heart broke a little at this, partly because it's me that has caused his pain, but also because I don't know how to make it easier for him (the
arrangements aren't going to change anytime soon).

Any (kind) suggestions on how I can better support him though?

My 14 yo daughter has done a lot of thia.
18 months post separation shefoes seem to be settled more.
At this stage it may just be his clumsy teenage attempt to get you back together. Equally it could be that he is just adjusting and had never moved before.
Or it could be that dads place just doesn't feel homely. Has he got enough stuff there to make it just his room not a room?
Or it could be difficulty going to whatever mate from the other home.
Good luck.
Good luck.