Don't change pace until it's priced.

Acceleration clauses are how you end up working faster for free. Acceleration clauses sound reasonable on site. Can you add crew? Can you work Saturdays? Can you bring this forward a week? But here is the trap. If the contract does not clearly say that you're entitled to time and cost for acceleration, all you're actually doing is increasing labor, pressure, supervision, and overheads for the same contract sum. You feel like you're helping the project, but commercially you're just absorbing the cost for someone else's urgency. This move is simple. Any request to speed up must be treated as a formal direction and priced before you change pace. If acceleration isn't documented and priced, it's just unpaid pressure dressed up as teamwork.