Q.Is my avocado plant okay, will it regrow leaves.
Do I have to plant it?.
Certified GKH Gardening Expert
Unfortunately, this method for germinating avocado seeds is purely for novelty and rarely leads to a healthy, mature tree. At this point, the infection is likely too far progressed, and you could have another tree growth, and in much better condition, before you could get this one to recover.
The best method for starting avocados will be to direct sow in soil, and put under lighting immediately. A healthy seedling will have about 6 leaves by the time it about a foot tall. Stretching, and low leaf count will be a result of lack of lighting.
An alternative method for starting will be to wrap the seed in a slightly moist paper towel and place in a ziploc bag in a drawer for a few weeks. Check it occasionally for germination, and plant when it is showing signs of germination.
This article will give you more information on the care of avocado trees: https://www.gardeningknowhow.com/edible/fruits/avocado/avocado-tree-growing.htm