Sweetheart can you get 10 mins on your own with him? Then take a deep breath and start with
"A I love you, I need to talk to you and I need you to listen, accept what I'm saying and not judge me. I love you and right now I really need your love and support. You know that I've had issues around christmas and this year it completely derailed me. I'll explain more when I can, but I need you to know that I haven't taken my meds since then. I can't explain it all right now, but I'm poorly and hurting and need your help to get better"
Or something...