Chuck, my tree gets as much sun as San Francisco can manage. It has a southern exposure, and my next door neighbor has a magnificent lemon tree. I fed it recently, and I water about once a week.
That tree isn't leggy. That is normal growth. It does seem a bit chlorotic or yellowish which is a nutrition problem, usually a lack of nitrogen or iron. I would supplement more iron as you have already added nitrogen during your recent fertilization. I would also start a foliar and root drench regimine with liquid seaweed. You might be lacking in other trace elements that regular fertilizer doesn't address.
There are products and most are organic. It is called Chelated Iron or Iron Chelate. Good stuff. BTW I used to have a stove exactly like yours but it was killed in a flood or I would still have it. Its name was Stove.