Ds2 has ASD, PDA and SPD, ds1 had a private but unofficial assessment that showed up ASD, OCD and anxiety. Ds3 has sensory stuff going on, and we have a paed appointment coming up as we have a few concerns.
Both older boys are constantly insulting each other and being nasty, which leads to ds2 hurting others, or trying to.
Ds1 is 15 and can't play appropriately with his 5 yr old brother (ds3), he is too loud with him, winds him up to the point of ds3 lashing out. We stop him, try to model appropriate playing etc, but ds1 sulks and gets very angry when we do this, and it never sinks in, so we have to supervise.
Many of ds2's meltdowns are a result of ds1 winding him up, being too loud, not being quiet when we ask him to, but he refuses to comply for ds2's sake because ds2 never complies for his sake.
Ds1 is having a hard time at school and is deciding whether he wants to be homeschooled or not, so he has a lot going on, which is exacerbating his behaviour.
Home is set up to be ASD friendly, predictable routines, everything written down so there are no (or as few as possible) surprises.
Individually ds1 is very easy, ds2 less so, but together, or with ds3, it's a nightmare and I'm doing a crap job at the moment.
We try to keep them split up, but they will only do this when they are rational enough to see that this is how it works.
If anyone has any tips how to improve things at home, please let me know, I'm running out of ideas!