Let's say that Zelda is the last major game of this year (10+m seller) and Switch 2 is Spring 2024. The rest of the lineup could look something like this.
June- Mario Sports (Please be baseball), Splatoon 3 DLC
July- Pokémon S/V DLC, Advance Wars: Reboot Camp
August- F-Zero GX HD
September- Star Fox, GB/GBC NSO library
October- Metroid Prime 1 HD
November- Mario Party Superstars 2 (let me believe), Pokémon S/V DLC
December- Everybody's 1,2 Switch
Ok, so Mario Party is probably close to 10m, but this would all be really solid for the second half.