What to say to him

[dotnetmum]

My DS is from from uni over the holiday. He has been diagnosed with depression a year ago. Last time he was here in summer, he left in anger, I don't really know why and has not replied my sms since.
He has been back for about 2 days so far and has been in his room the whole time. I leave his dinner in the fridge. He comes down to get food at night when no one is around.
My daughter says I shouldn't bug him so I have not, just glad that he is here really.
But now I would like to sms him a message, what should I say?

I think it's important what he left in anger about

My adult dd has mh problems. She will not communicate with me about it. It shuts her down so i just talk to her about general stuff.

You just have to give him time.

Its hard i know

Mental health problems are exhausting, confusing and difficult to explain, decisions are hard to make, it's hard to put into words, so I'd just be as you are, don't pander around them. However i would keep trying, but instead of a 'how are you tx' make it a 'this is what were up to this wknd if u wanted to come, miss you etc etc' (as examples) kind of tx, one that doesnt neccessarily warrant a response, just so he knows ur still there x

Update: my DS has been spending the whole time in his room. I leave his dinner in the fridge and he gets it when no one is in the kitchen, as well as biscuit and snacks. I let him know what we are doing in sms but he doesn't answer. I accidentally saw him one day as he was going pass and my jaw dropped and he kinda had smirky smile.
In the mean time, I am trying to spend some quality time with my daughter who is home from Ireland on holiday. But my husband and her don't get on, and sometime I think he is envious of my relationship with her. And sometimes they fight over little things like tv.
I feel everything is so difficult and I can't wait for them all to leave again. But then I will miss them and I worry. I don't understand what went wrong with this life. My kids were both such good kids before. My husband is a good man but he has a temper and shouts at people (nothing more) sometimes but we were ok before.
Now it just seems that we can only have peace when everyone is their own room.
Someone said to me that I should be angry with my son for being rude but I know he is genuinely depressed, at least he was when I last had a proper talk with him months ago. So I am only worried and not angry.
Are we ever going to be a happy family again?