Hey non.
Telling her sets the time clock rolling. She will have it in her head that at some future point she can have wine in the house. That is probably true... At some point. But the point is when you decide not her. This can also be used as a measuring stick by her. Maybe not intentionally but she will wonder how well you are doing if she cannot still have the wine in the house. Something you said can be done... At some point.
So... IMHO... Say nothing until the actual time you feel you can. No one gets disappointed. No expectations had been set.
K