How long would it take to correct mixed eyes?

My left eye has been changing but my right eye has stayed relatively the same so now when I wear my glasses, my left eye does not match my right eye and I see double. I even considered cancelling my online digital meeting this week cause I can't see properly either with glasses on or glasses off. I know I could use a cell phone for the meeting, but that would mean its harder to exchange digital data for discussion.

How long would it take to correct mixed eyes?
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