Well, my dh has it very badly and is probably quite long standing.
background - the vast majority of his family lost teeth (possibly genetics and bad oral hygiene together), dh lost teeth so had bridge (no implants for smokers) - front teeth start wobbling so dentist refers to peridontist and it was a course of deep cleaning (under anaesthetic etc) - a quarter of the mouth at a time with her - and then visits to the hygienist every three weeks (and there was an element of him learning how to clean teeth).
Peridontist wanted to get him to a stage of 'cleanness' where he could a very invasive treatment of deepcleaning via slitting the gums.
He never got to that stage. In part because I went back to work and he started missing appointments (they were miles away) and the peridontist did call me to say that she was frustrated with him as there was no improvement as he wasn't doing his bit (no reduction in pockets etc).
So, he goes back home to his country and talks to a dentist there who says pah his treatment is crap, his bridges are crap, he just needs a treament of blood (idea inject your own blood into the area which helps the gums bone rejuvinate - not done in UK) and gums/bone heal themselves.And then implants.Cool £30k.
I block this as I think the guy is talking crap.
Do nothing.
2 years later (now) - I've arranged for him to have treatment locally so it's all starting again. He's having the 4 quarters of his mouth deep cleaned. The peri agrees with the last one that he cannot have implants as a smoker, the blood treatment would not solve the problem (it's too mild a treatment and that's why it's not use here), he'll lose his front tooth but it's more of a question of stopping the rot so he can have another bridge (only option for a smoker).
He has the kit - just needs to use it - and do it better.
This has affected his health as well. But he's an extreme case.
I'm sure you'll do better.
Put it this way - the initial cleaning is done in stages, 3 x anaesthetic per go and painkillers after. He's still working though and life just goes on.
After this is all finished they'll leave a month or two and then review the pockets (they can measure the size of pockets) and take it from there. He may indeed need the gum slitting thing (he wanted to avoid this) but the peri will advise in august once they see how he's responded to this.
But his is very very very extreme and long term. Your peridontist will advise what you need.