Your lawyer wants to make money. Check the history of H1B. It takes almost 7 months for the quota to finish. 

 

You will not be in H1B status until it starts which is on October. Until then you are in F1 status.

 

You don't have to go to Nepal for stamping. It can be easily done in Canada or Mexico. I just recently did it in Canada. Four days of work, thats it. Actually if you don't have to travel outside US you dont need stamping at all!!