Unfortunately if you're getting told to wait 90 days before you can cross save then nothing can be done to shorten it and you'll need to wait before you try again.
The 90 day cooldown is part of Bungie's cross save policy and as such can't be reduced or removed.
[url=https://www.bungie.net/7/en/CrossSave]Cross Save FAQ[/url]
[quote]Can I disable Cross Save once I’ve enabled it?
Cross Save is intended to be a one-time action, but we realize there may be cases in which you want to visit the characters you left behind. Once Cross Save has been disabled, you will have access to your original characters on each platform. [b]There is a 90-day wait to re-enable the feature. This policy exists to discourage activity like account recoveries by other players.[/b][/quote]
That's frustrating, I was only following what your instructions told me to do in order to resolve it.
Is there anything that can be done.. I just bought the xbox for my sons birthday and he's determined to play his Destiny characters on it. I dont want to be that guy that tells him I messed it up. We are in complete lockdown here also, so this would really help if there was some solution :(