I worship Shakyamuni Buddha. Is it OK for me to recite the Infinite Life Sutra? Please clarify this for me.
Shakyamuni Buddha spoke of the Infinite Life Sutra so that we can recite and maintain it. Your reciting the Sutra shows obedience and loyalty to Shakyamuni Buddha.
Better yet, consider rebirth to the Western Bliss Pure Land by cultivating the Pure Land Dharma Door in earnest. It will make Shakyamuni Buddha very happy.