At my wits end with our 13 year old Bichon early morning behaviour - hoping there might be some wise words from Mnetters.
Bichon has always slept upstairs on the bed then taken herself off to the landing/ bedroom floor when she gets a bit hot. Has always been bomb proof in terms of toileting and gone 12/13 hours through the night with no bother - you’d have to rouse her to go downstairs. Fast forward to 13 years and we’re really struggling to get any sleep - ironically we’ve a newborn baby and it’s the dog that’s keeping everyone awake 
She gets up around 5am, not quietly, think banging round the bedroom, snuffling, head shakes - enough to wake the house and the other younger dog who then follows her downstairs. They are toileted pretty immediately, if left at this point they’ll bark to go out and might have an accident inside.
The 5 ish wake up is seriously affecting DH who struggles with insomnia at the best of times and just can’t go back to sleep. We’ve tried bedroom door closed, access to landing/ hallway, putting her to bed downstairs (total disaster - pooing and 48hours of stress vomiting), later bedtimes, adjusting evening meal times in case it was hunger. If we go to bed at 9.30 ish, she could wake as early as 4. She’s regularly checked by our vet, no health conditions other than some long-standing skin issues which are permanently medicated.
What am I missing - other than the obvious missed boat around training your puppy to sleep downstairs.. Do we just need to resign ourselves to a permanent early alarm? Has anyone successfully reset their dogs body clock?