LH usually opens up awards in F/J within a week or two of the flight departing - so that may be able to get you from JFK to MUC or FRA, from there you would have to still find the connection down to MLE, which could be difficult. This would also be cutting it even closer than current timing.
To make it easier, you can also look at doing a stopover somewhere on the way to/from to allow more flight options, or arriving a day early/departing a day late and spending a night in Male.
Best option at this point, if you are not finding anything, would be to use one of the booking services mentioned above.