Slow Plant growth – Tree Plantation

Question

I had planted Indian almond sapling on the foot path near a building in Mumbai (India).
Now 3 months are passed away and growth is very less.
Some symptom i have seen are,Traces of cutting on leaves,no new leaves are coming but the existing one are getting bigger.
I suspect the problem of root rot because i had found clay soil at the time of planting seedling.
Need your advice to rectify the problem.

Answer 1

Well draining soil is key to success.
Amending the soil would help with drainage.

https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/how-to-improve-clay-soil.htm
http://www.indianalmondleaves.com/

Answer 2

Thank you Sir for the valuable guidance.

I ahve read all the topic about soil improvement and use of compost or rotten mnure compost.

Before implementing this ,I want to clear my one doubt about this plant.Request you to please answer this also & guide me correctly.

I doubt that my plant is infected with fungal disease as i have seen some symptoms.Have taken photograph also but dont know how to add the photos now.

Kindly adivce