I think it is actually 9 months instead of 90 days.
It sounds as if the 2 beneficiaries are cooperating, which isn’t always the case. They should be congratulated as some options maybe beneficial for one & adverse for the other.
Not to hijack thread away from avd, but thought I’d mention something else to consider. It may not be feasible as details really matter here & real answer is too far into weeds of ny tax law for me. The steepness of the ny estate tax cliff is a bit out of the ordinary.
I’m assuming this isn’t going through probate, but there is a will. Correct? If so, was will written by same lawyer being used now?
Concept is for the estate to make a charitable donation which has the effect of lowering estate value & thus keep from going over the cliff. Some wills have a “Santa” clause (or provision?) that empowers executor to do so. If true in this case, it may be best approach. If not, it MAY be possible for all beneficiaries to agree to authorize it. There are possibly gotchas in how this might impact both income and estate tax, source of $s, etc.
I would hope your lawyer would bring this to the table if viable, but you mentioned you might like a heads up…