Meyer lemon dropping healthy leaves...
All of a sudden in the last week and a half or so, my Meyer lemon has dropped at least 25 or so healthy looking leaves. Nothing has changed in my routine - water twice a week, the soil appears to drain very well, and I've been fertilizing every 6 weeks with a citrus fertilizer (12-4-6 or something close). The tree is on it's second bloom, and has 50 or so fruits on it.
Here is a picture of the overall tree:
Here is a shot of some of the fruits:
Here is the one fruit that remains from the first bloom (and his days appear to be numbered):
And finally, a collection of some of the leaves that have dropped:
So, do I have anything to worry about? Is this normal?