I wouldn’t say it’ll increase slower, but rather, it’ll develop differently. All the character’s relationships progress at different rates. Triv is tentative whereas Welling actively pursues a friendship/romance with the MC from the start. I don’t want you to feel FOMO though! However you play the prologue, there will always be opportunities to change dynamics once you reunite at the Golden Academy. People often don’t connect during childhood, but then grow close when they’re older and vice versa.