Separation anxiety solutions?

[blueShark]

tried searching the archive but nothing much..so as the title suggests if your dc had this issue how did you deal with it and possibly overcome it?

DS is 5.6 asd but primarily expressive language delay that affects him the most. He is better with separating from dh than me but maybe because I am sahm, do everything with him and for him incl all therapies and dh does just the fun staff such as swimming, horse riding, bike ride, park trips etc.

DS freaks out when we go round to friends house i belive hinking i will leave him there or music therapy (that we sadly discontinued as he failed to separate from me and therapist wanted parents out gradually by 5th session at the most).

Few therapists have said it's all about him being still immature and with time he will overcome it.

So what has worked fro you?
Shall I do gradual retreat and start leaving him for playdates and familiar places?
Shall I play cold turkey and let him scream?
We have lots of friends nearby that he could go play with his sibling or stay overnight but I need to be there too :(

Maybe a need to clarify, he has no issue separating from me from home, anyone can take him out and I can go out with no issues, it's just other familiar and unfamiliar places..I badly want him to do ican assessment but fear he will fail because he will not want to separate and refuse to cooperate with them.

Thanks Leningrad, hope it goes well for your DS.

Thanks zzzz. The issue is he will still scream the house down even if it's mostest fun that is about to happen. I suppose I should not give up and give the gradual separation another go...unless anyone comes with a wiser fix?