Complex sentence: His final R&B no.1 was "That's The Way Love Is", in 1963, but he continued to enjoy a consistent run of R&B chart entries through the mid- 1960s.
Split into simpler sentences: His final R&B No.1 came with "That's The Way Love Is" in 1963. However, he continued to enjoy a consistent run of R&B chart entries throughout the mid- 1960s.