If you are dissatisfied with your current nephrologist, you need to either persistently and politely keep asking for more help and more of what you need (e.g. more explanations), or you need to try a different nephrologist. I’m sorry as doing this is a lot of work, but unfortunately, it does sound like you need to work closely with a health professional.
It does not even have to be animal contact. Human contact is great too, so if you are suffering from high blood pressure then a cuddle with your spouse could be just what you need. Being able to laugh with our partner or friends is a great way to reduce stress, so spending regular time socialising is a good tool when it comes to keeping a normal blood pressure level.
Pickering TG, et al. Recommendations for blood pressure measurement in humans and experimental animals: Part 1: blood pressure measurement in humans: a statement for professionals from the Subcommittee of Professional and Public Education of the American Heart Association Council on High Blood Pressure Research. Hypertension. 2005 Jan;45(1):142-61.
Eating nutritious foods that are packed full of vitamins and antioxidants is a great way of lowering your blood pressure and keeping it down for good. Raw vegetables and fresh fruits are vital to a healthy diet and play a key part in controlling your blood pressure. Spinach, tomatoes and garlic are all good choices for keeping blood pressure down. 
i am currently 63 years old and was on a higher daily dose of zestoretic from about 1992-2010 for 140/90 BP and slowly reduced my need (lower mg) for zestoretic by paying more attention to my health (diet, weight, exercise, etc), eventually (about 2014) i got down to 10mg of lisinopril (no more hctz) about once per week or as needed since i was monitoring BP at home. in late 2016, a new doctor recommended that i stop taking 10mg lisinopril, and my blood pressure was usually low about 100/60 after breakfast or exercise and would go up to about 130/90 in the evening. in 2017, my BP was 150/90 the morning before hernia surgery. anyway, long story short my BP seems to fluctuate a lot during the day, low (100/60) after exercise, low after breakfast, high (130/90) before going to bed. the low BP periods get shorter and shorter so i went back to taking 10mg lisinopril as needed, about once every 2 or 3 weeks and the low BP periods get long again. also my pulse seems to get higher (80) when my BP gets lower 100/60 and my pulse gets lower (70) when my BP gets higher (130/90). anyway, i recently moved so probably need to see another new doctor, but thought i would just let you know what is going on.
Bananas are one great source of potassium, but there are other tasty ways to get your fill. Potatoes actually pack more potassium than the yellow fruit (and you might be surprised to learn there are plenty of other health benefits of potatoes, too). Sweet potatoes, tomatoes, orange juice, kidney beans, peas, cantaloupe, honeydew, and dried fruits like prunes or raisins are other good sources. In all, you should aim to get 2,000 to 4,000 mg of potassium a day, Van Horn recommends.
As simple as it sounds, breathing is an effective technique to lower blood pressure. Slow breathing and meditative practices such as yoga can help decrease the stress hormones that elevate renin — a kidney enzyme that raises blood pressure. "Sit in a comfortable chair with armrests. Your body should be as relaxed as possible. Place one hand on a part of your chest or preferably your abdomen. Watch your hand rise and fall with each breath...feel the breath as it moves into your abdomen,” Dr. John M. Kennedy, a cardiologist in Los Angeles, Calif., and author of the book The Heart Health Bible told Medical Daily in an email. This should be repeated seven times and can become a daily habit by doing deep breathing 10 minutes in the morning.
Natural News is about to begin releasing lab test results for off-the-shelf food, supplement and pet food products, covering heavy metals, nutritive minerals, pesticides and herbicides. These details will be released exclusively to Natural News email newsletter subscribers (FREE) and will NOT be publicly posted on the website. To be alerted, join our free email newsletter now, and watch for lab test results in the weeks ahead.
There are many good options when it comes to such medication. Examples are ACE (angiotensin-converting-enzyme) inhibitors or AII-blockers (angiotensin II receptor blockers) such as Enalapril or Losartan. If this kind of medication doesn’t give the desired effect, you might have to add other medication such as so-called calcium antagonists (e.g. Felodipin) or a mild diuretic (can be found as a combined pill with Enalapril and Losartan).