What’s the diagnosis??

Hi! I haven't posted for a while... sometimes I've thought about it when I've been overwhelmed but then the thought of all the one finger typing I'll have to do puts me off! Well... really I suppose I mean there's just so much to say. But I have a question about how do others go with communication with their loved ones Dr? When my son was in hospital I did see the dr with him on two occasions.. the last being just as he was discharged. At that stage the Dr was thinking that my son has some sort of BiPolar. My son is only really comfortable with ADHD diagnosis and then depression caused by failure. Adhd was not diagnosed until he was an adult. So he is on Bipolar medication and adhd meds. Just lately I have been thinking he's not much improved at all. He was discharged in Feb ... was going to some clinic groups until Covid.. now does group on Skype. I've asked to be involved with drs appointment.. thing is some things will be difficult to say to Dr in front of him.. my son denies that he drinks too much alcohol... but while it's true that he has some alcohol free days when he does drink it could be as many as 8 drinks.. or a whole bottle of wine and a couple of mixers. I think the Dr needs to know this especially as it may affect efficacy of his medications. Any thoughts people in similar situations? My son is 33 and has been living back with us for over a year.