Its hard clay soil for sure but drainage is good. I did do the water drainage test after the hole was dug. You could be right, may be the clay. If anything I would say its under watered not over watered.
If it lives , its a 3 in 1 avocado planting (Little Cado + Holiday + Fuerte) for cross pollination and year round avocados.
I’ll put back the chopsticks or add a taller cage to keep the dogs out. I do know soil has issues - high ph, low nitrogen, low iron. Will wait for the soil test results before adding any amendments.
Will give it 6 more months to see if I can rescue it. If it doesn’t get better in 6 months I’ll pull it out.