Your family are food addicts: meaning you are surrounded by food all day long. I cannot imagine a worse environment to undergo a fast.
This is why all the pro' & qualified supervisors recommended going to a retreat where the environment was conducive to fasting with the added support of fellow-fasters.
Re your blood-pressure: this is what Dr Fuhrman MD has to say........................
"Occasionally, blood pressure falls to what could be considered very low levels. If this drop is PRONOUNCED and SUDDEN, the fast should be broken. However, if the patient is otherwise stable and the exceedingly low blood pressure has been reached gradually from a relatively low pressure at the start of the fast, it should not be of concern. In addition, I have noted that a narrowing of the pulse pressure typically occurs when fasting. For instance, a reading of 80 over 70 is not unusual, especially for a person who did not have high blood pressure to begin with.
The pulse generally falls somewhat when fasting, reflecting the decreased workload of the heart. Any sudden change in vital signs, such as a sudden drop or rise in pulse, should be further evaluated by the physician to ascertain its benign nature, or the fast should be ended".
In other words be watchful for any SUDDEN changes in BP.
Anyone who water-only-fasts should have their own BP Monitor and take daily readings on arising when BP is at its most normal in the resting state.
Anyone who neglects this piece of advice is not fasting as safely as they should be.
Keep an eye on your pulse and take readings at least three times a day in the resting state to give an accurate reading.
Dizziness is caused by the lowering of BP which invariably occurs during a fast, and weakness can be the result of toxins entering the bloodstream and/or not enough water or both.
Drink only to thirst and arise slowly from a sitting/lying position and these two common problems of fasters can be greatly reduced.