Thanks for getting back in touch. Your 'fella' is a very lucky one because you care so much about him and want him to be well and happy.
And then the downside seems to hit! Honeymoon period apparently over, now the poor guy is feeling dog tired, not the harsh painful tired without the xpap but debilitating, depressing kinda tired. Mood swings and general grumpiness followed a steep energy crash at the weekend, from feeling positive and up beat, getting on pretty well with the machine, averaging +6 hours per night.
I think mood swings are very normal. When you suddenly learn that you are not the sole person in control of yourself and your way of life, it can be hard to accept, especially as the OSA jumped up and bit him on the bum ... it wasn't his fault and suddenly he's landed with a pretty massive lifestyle change. Time will help.
BUT ... congratulations are in order for him to be averaging 6 hours on his machine at night. It takes some people a lot longer to adapt, and 6 hours is fine as regards being 'compliant' ... which means using the machine for long enough for it to have a beneficial effect. You need to praise him for this. Your praise is justified.
Is it normal for it to be dramatic swings and roundabouts and is he really not the only one to feel this way?
Absolutely. And he's certainly not the only one. But you notice it more because you're close to him and you love him.
I'm working on the principle that there's at least 10 years worth of mind and body conditioning to undo before really feeling the benefit of good sleeping habits. Not using the machine isn't on the cards but is there anything we can do in the meantime to alleviate the feeling rubbish now?
There may well have been a long period of mind and body conditioning before he got diagnosed, but I think you'll find that he moves forward with a new mindset more quickly than one might think for all the time that he suffered from undiagnosed OSA. As for the 'rubbish feeling', it does take some time for the benefits of the machine to be felt and for many people this is longer than a fortnight, though he's made great progress in the time he's been using it.
Does the body go into a kind of shock at getting so much sleep sustained over a long period, relatively speaking as it's only been a fortnight.
I don't think it's a question of shock, but it does take time for the body to adapt to new ways of living ... for example going on a diet (!), antidepressant or other medication, or even having your teeth repositioned by wearing a mouth brace! Two weeks is a very good start, but it is only the start. Encourage him to persevere and he should start to see indisputably positive results very soon.
All good wishes, Alsa x