Comparison of time-evolution between the real EoS (solid lines) and ideal EoS (dashed) standard model run (0.2 au, Ṁ_peb = 10⁻⁶ M_⊕ yr⁻¹, no opacity from pebbles). The masses (total, core, metal, and H+He) are plotted on the y-axis as function of time. The points where the core mass is fixed (evolution to Phase II) are indicated by the open gray circle, while the points of crossover are indicated by the blue circles.