Sequencing of engineering classes is such that it would be highly unusual to take a majority of 1st semester classes as humanities and expect to graduate in 8 semesters. It’s possible he took this approach to ease into college and start out strong academically thinking it would be an easy load. Whether he could still graduate on time with a summer session thrown in depends on how often the sequenced classes are offered.
Next semester should show if this is purely a maturity issue or not…