What is the exact longterm process for Minoxidil 5% on my eyebrows to have constant eyebrow growth?

You have to use it forever and it takes several months to see the results.  The recommended use is twice a day but it's for scalp hair.  Eyebrow hair may be affected differently.  Once you start to see results, if you stop using it, the hairs you gained will fall out.

There's no exact long term process for minoxidil use in the eyebrows.  Minoxidil is not formally approved for the eyebrows but many physicians have different ways of using it.5 % minoxidiil twice a day5 % minoxidil once a day2 % minoxidiil twice a day2 % minoxidil once a dayminoxidil 5 times per weekminoxidil alternating with bimatoprost (Latisse)There are many causes of eyebrow loss. WIthout seeing your eyebrows and knowing more about your medical history and history of eyebrow loss exactly, it's hard to know what might work best. It's a good idea to check in with your doctor at this point. A number of tests could be considered, including iron and thyroid, and hemoglobin which could reveal potentially contributors to slower growth. Close examination of the eyebrows could reveal whether seborrheic dermatitis is present and whether this contributes to changes in growth. 

It is great to hear that you had good results using minoxidil for your eyebrow as prescribed by your doctor. You should absolutely go back to your doctor to ask this question about going forward. He was very good in advising you successfully, so you should go back.