HELP! Avocado issues
I need some expert advice on Avocado's. Late January I bought a 5 gallon Haas avocado tree. I waited until the end of February to plant it. Now it seems to being going through a tough time, maybe it's transplant shock im not sure. It has dropped almost all its leaves, but new bugs are on the tree and new leaves appear to be growing from where the old ones have fallen. The tree is almost completely bare. I've been watering once a week deeply. Is this normal for them to lose their leaves like this? It's obviously still alive since it's budding new leaves. Anyone who knows anything about avocado let me know.
Some additional info
Planted on the north side of yard
gets filtered light in the afternoon
my soil is clay (i know they like good drainage)
im in Inland San Diego County