See what happens. If you are having some success without WP... great. 
If you are not getting anywhere... start the WP.
Three months should be a fair amount of time to know something.
Really, you have to play it by ear. See what happens.
Don't set any firm dates. 

I think the person that you referred to as being your size and making great gains with PM, is Carmen.
She has had excellent results. 

PM is good if you use the right brand. Ainterol or Barlowe's are highly recommended. 
I know that you don't like to take pills, which is why I recommended the Bi-Est cream.
PM and Bi-Est are both powerful products.