Participating in governance at all times may not be a realistic duty unless the governance process isn't heavy.
Also, what happens if someone is sick, or is raising a young child? Are they in violation and at risk of losing citizenship?
There are three things happening in 4.3.a,
What about sticking to simply:
4.3.a "Every Citizen shall uphold this Constitution."
4.3.b "Citizens are expected to participate in governance when their life permits."
Suggest removing the part about needing to act in accordance with the values outline in the N3 Manifesto for the reason that it violates the free will of citizens to compel them to follow the values of any document even if the manifesto is a good doc.