We inherited a Meyer lemon tree and an Orange tree over a year ago. Before we took over, we knew they survived a summer without much water. Both trees seem to have lost half their leaves and the other half turned yellow. Since we took over, the situation had not improved or may be worsen. We asked the locally nursery and they said it might be caused by not deep watering them. So we followed the deep watering instruction for a year and it stayed the same. This year, the orange production reduced by 90% (3-4) oranges. Lemon is about the same as last year, probably ~10. However, they definitely seem to be struggling..please help!!!