Hi there,
I can see this thread is quite long now but thought I would add from a professional perspective (maybe someone has already done this). I’m a clinical psychologist, I work in a child development and behaviour service.
What you describe, as I have seen others say, is developmentally normal (and what we would expect to see) for a child your sons age introducing a new sibling into a family. You don’t need to worry about dynamics as they get older- it is likely they will fight and also likely they will love each other very much. So long as both children know how much you love them this is extremely unlikely to turn into anything more than a temporary and expected struggle to adapt.
Having said this, as you have said before, this does not mean that you can sit and allow one child to physically hurt another. The most important thing is safety, which means that if you need to keep on moving away or removing yourself during a feed then that is what you have to do.
Second to this is your approach to ensuring both children feel loved and understand that you can’t allow either to be hurt. With this the consistency comes in. Nothing you do is going to work unless you put it in place consistently over time. For a child your sons age you would be looking at having a consistent approach for at least 2-3 weeks before you would start seeing any effect. In fact, you would likely see things get worse before they get better.
as a starting point I would be looking to understand what your son is trying to communicate- is it, ‘I don’t like you giving this other baby all the interaction’, ‘do you still love me too?’ , ‘what the F* is going on here, I liked it better before!’. Maybe he doesn’t understand? Maybe he actually has overwhelming feelings towards her but isn’t old enough to understand how to express those right now. There maybe other things. Then I would be looking at addressing what he is trying to communicate.
It looks like you’re already very aware of the importance of having special time, lots of time with him and on his interests and ample opportunities for rough play. Try to continue with this as much as possible. Then if this is really mainly happening during feeding time (or other specific situations) I would zoom in on them. Make a plan with your husband about how to approach - he needs to be overseeing your sonic you have the baby- maybe he can verbalise things your son might be thinking or feeling whilst they watch a feed together - ‘I wonder if it feels like mummy might be spending a lot of time with baby, but we know that she loves us so much and we are so special, I remember we used to feed you like this too- do you miss that?’. obviously you can’t do this every feed, but start with once/twice a day if possible. During this time I would focus on telling your son how well he’s doing at any point if he is sitting calmly. As I think I saw someone else post, you want to try to make him feel included, needed and important to both you and your husband- so say how much help he’s giving you and maybe notice to him if the baby looks towards him ‘She’s looking at you! She loves you so much!’, ‘Nobody has been able to keep her so calm as well as you, she must really love you!’, ‘I’m so proud of what a calm big brother you are’.
Basically you want to be labelling all the positives and giving as much reassurance as possible.
Try not to shout or react an an extreme way when things do inevitably happen, as if your son is seeking more interaction this can actually meet the need (and you might see laughter, and repetition of the behaviour if this is the case). Instead, try as hard as you can to keep a straight face and say sternly ‘ I love you very much, but I cannot let you hurt the baby.’ Then move away. Don’t say more than this. This is where the consistency is most important, and you’ll likely see a change in a few weeks (after things get worse before they improve- this is called an extinction burst).
mine tangible hung that might help your son could be to read the invisible string lullaby book- it’s about having a strong attachment to your caregivers even when you can’t physically be with them. I read this with my son every night and it opens up the conversation about worries about being away from me/ my husband.
I could probably say a lot more but I’m sure others have said very similar things. It sounds like you’re doing a great job. Try not to worry too much, even if you did absolutely nothing things would change and improve over time (it’d just take a bit longer!)
wallflower