Please do not give extra dosage of tablets without consultation/ prescription from your Doctor.
Meet your Doctor who had prescribed the medicine for a change of medicines.
Ideally, an hypertensive patient should meet his/ her Doctor 6monthly to 1 yearly, to modify the dosage of their tablets .
Uncontrolled BP can lead to sudden brain strokes/ischemia.
And overdosage can lead to fatal reduction of BP.
Next Steps
Kindly meet your Doctor for change of medications as per requirement by condition of your mother .
Take care!