I purchased a home in North Portland in Fall 2021 and come into possession of a 50-60 year old plum tree. This tree had been left to its own devices for at least a decade, and was fully wrapped up with a fig tree and some tree sized photinias. They even had a triple point where the branches from all three had grown into/through each other. With no interest in figs, and having interest in sun for a garden, we hired an arborist to removed the fig(s) and the photinias, all of which were 20-30 ft tall. The Plum tree was also pruned during this event, in order to extricate it from the fig, as well as a light hair cut. That was Nov 2021. It now has sun on its trunk, which it hasn't had for many years. Early this spring it had an OK amount of blossoms and new growth. All was well until the last ~2 weeks. We have now lost almost 100% of leaves on the lower half of the tree, and have recently found young fruit is falling as well. The leaves, both fallen and those remaining, appear droopy and have holes chewed in them, but we have not observed any visible pests. We are very interested in having a healthy tree and harvest in the future, but don't have the know-how to diagnose this problem. Help! P.S. We have many more photos, including both pre and post pruning, and can take/send more if desired.