Teens are well known to be the most difficult to parent.
My situation is a little different & a bit similar.
If the depression is psychotic then its more serious than just manipulation (which will include unconscious aspects).
Yet there are probably aspects and behaviours that would fall into that category. It takes a lot of discernment to figure that out and its best you alone make the call, but dont do it in a haphazard way, maybe target one behaviour, when you feel certain.
It also helps to have some GOOD bonding moments, without them I could not call him out on other things.
After years of walking on egg shells for my son but also him on egg shells for me ... I am feeling some level of reasonableness and support.
Use what ever support your psych can offer.
I hope he can use whatever services are on offer for him. For us my son has little faith in the system, so its often up to me get what I can and then use it to help him. Does that make any sense??
Sorry there have not been many replies. Good Luck @Boo13