I don't really know where to begin but I'll give it a go...
I have been with my DP for 5 years. I have a DD (6) from a previous relationship, a DS (3 months) with my current partner and 3 DSC (8,9 and 13).
Before I got pregnant with my son everything was running smoothly and I felt we had blended well. My DSC would come every weekend, we'd all spend time together, lots of outings and family camping trips and a big summer holiday every year. I had a great relationship with all 3 DSC and wasnt really worried about the new baby. How niave! I tried my best to continue this whilst pregnant and the children all seemed to accept the news well.
However since my son was born the children have all taken a huge step back. Whilst my daughter has adapted to her new role brilliantly, quite often only 1 or 2 of my DSC will come on the weekend and on occasion none of them will. The youngest DSD who is 8 didnt meet her baby brother until he was 8 weeks old, which I found incredibly sad and a bit hurtful if I'm honest. They often have reasons like feeling unwell, tired, homework, seeing friends etc but it's gotten to a point now where I feel there is a lot more to it.
My daughter misses them terribly when they don't come and none of them really have a bond with their baby brother at all. Infact when they do come they act as though he doesn't exist- which again just doesn't sit right with me.
We have tried to do as many things as a family as possible but DS isn't the easiest of babies and I can see their frustration when he interrupts a film by crying or when we can't be as outdoorsy as we once were.
We have booked a holiday for the summer, but were shocked to find 2 of the 3 DSC dont want to come, one preferring to spend the week with her friend and the other at an activity camp. I feel as though our family is divided and I have no idea how to make it better.
I can see how much it hurts DP to hear that they are not coming for another week, but I really don't know what more to suggest. I have suggested he goes out with the older children and spends some quality time with them but he thinks this will just divide us further.
I really am at a complete loss and am really upset by how the last few months have played out.
Sorry for rambling, I just have no idea how to move forward. I miss seeing and spending time with them as do my DP and DD. 