Keeping hours even to last week with only small changes. As with Base1, work on any consistency problems and don't move workouts to later days if missed--let them go.
Swim/Bike session together. The goal is to swim fairly hard then an easy cruise on the bike while practicing transition. Lake swim is best but you can setup a transition area in your trunk and run out of the pool just as easily.
90min with hills. RPE 3-4 with 3x5min sessions at the end at RPE 7, recover 2min. Between efforts.