I thought I would get answers to my questions and be guided on this platform where many knowledgeable people exist. Unfortunately, no one has an answer to my question. This is really not expected here.
Now I'm going to answer my own question so others will be helped. The answer is there is no need for Form 15G even if the service is less than 5 years and the amount is below 50,000. Only when it crosses 50,000 and the service period is less than 5 years do you need to submit Form 15G.