Losing your social network is daunting. Making that change can be more stressful than people realise.
My advice - for what it's worth, is to not give up that control if you still have it. If you can play along to an extent and keep your friends if you need to, it might make the change easier.
Remember though, these people won't be your friends once you come clean. Even lifelong JW friends you think you are close and can trust, will shun you and feel self-righteous while doing it.