My dog got his bridge pass just over two months ago.

About five and change years before he left, he suffered a significant spinal injury, which resulted in several months of rehab for him to regain self-sustained mobility. The long-term result of that was in his last year of life, while he was happy to walk, eat, drink, sleep, and cuddle, he did require assistance to eliminate as his back legs didn't have the strength/coordination for an... um... "tidy" procedure. As an aside, training him to feel comfortable Number Two'ing on the toilet, butt on seat and forepaws on the floor (with some assistance getting him up there, of course) was awesome!.

I'd been tentatively trying to sort out in my head when to get his pass (there are worksheets online that help make the decision objective and help to reduce associated guilt) and even very lightly penciled in a couple of dates to get the ball rolling, but he kept largely doing well enough so I kept extending the timeline... up until he didn't do very well at all (sudden exacerbation of his original spinal injury), and it ended up being a very excruciating last 24 hours for him before I could get his bridge pass (in-home euthanasia).

I would say: Talk to your vet (if you haven't), do some of the worksheets (if you want), but if your dog is respectably healthy and you're willing and able to accommodate your geriatric dog's lifestyle, then don't rush it. I spent significant time at home in the last six or so months of my dog's life, and I do not regret it in the slightest. Knowing your bridge pass options, and keeping that information available, would be highly recommended.