Does the deteriorating health of a patient, despite their persistent supplication, mean that God does not want to answer them?

Continue to supplicate and do not stop, and be patient, for Allah is capable of hastening your healing. You will have a great reward for your patience. This affliction may elevate you to stations with Allah that you would not reach through your good deeds alone. A believer oscillates between a blessing that necessitates gratitude and an affliction that necessitates patience, and he is required to fulfill the duty of servitude in all circumstances.