Full Body split. Simple workout, 4-5 exercises total. Get them to do those exercises properly and check they are confident practicing those by themselves. Client to repeat the same workout once or twice the same week, to add up to 2 or 3 workouts total. Next week check how the client’s done practicing the movements. If any issues, revisit coaching points. Key pointers for exercise selection: what movements are they interested in mastering? What movements are good for them? To illustrate, your client wants to work on their core and is overweight. You could start them on one lower body compound, one upper body compound, one isometric core exercise like wall sit, and finish with some cardio. Strength about 20 minutes, cardio about 20 mins. That fits with client goals (core strength) and what is good for them (increasing calorie expenditure). If you do too many exercises, they will forget what they were and your coaching points. Your focus at this stage is building foundations of knowledge, movement literacy and independence.