Planetary growth timescales of in-situ growing planets for three different disc models: an irradiated disc (left), a surface-heated disc (centre), and a midplane-heated disc (right). The light blue line represents the starting planetesimal mass, while the violet line marks the pebble isolation mass. The small arrows near the x-axis in the central and right panel show the transition radii between the viscous heated inner disc and the irradiated outer disc, respectively at initial time (grey) and at final time (black). Moderate surface heating delays the embryo growth in the inner disc, changing the inside-out growth of a typical irradiated disc into a growth mode that favours the region between 1 and 10 AU. Strong midplane heating significantly delays inner growth, suppressing it inside approximately 2 AU.