Here you go – increased level of difficulty for the little ‘tune’ bits.
The idea is that you pick and choose what your student it ready for, and award points/stickers or ‘well done’s as appropriate.
Add your own fingering, write in possible solutions for the RH cadence, change chords and time signatures and LH accompaniment figures for the lead sheets – just do whatever seems good at the time! If the ‘hands together’ bits are too hard for sight reading, just do one hand at a time.