it’s not romance but http://www.mangago.zone/read-manga/the_beginning_after_the_end/
http://www.mangago.zone/read-manga/a_queen_s_law_of_survival/
http://www.mangago.zone/read-manga/your_majesty_please_don_t_kill_me_again/ (this one fits ur description)
http://www.mangago.zone/read-manga/i_raised_the_beast_well/
http://www.mangago.zone/read-manga/the_youngest_princess/ (not sucking up, but the fater sucks up to daughter, kind of meh)
http://www.mangago.zone/read-manga/the_precious_sister_of_the_villainous_grand_duke/
http://www.mangago.zone/read-manga/the_emperor_reverses_time/
http://www.mangago.zone/read-manga/the_garden_of_red_flowers/
anyways all of this stories here, the children are the ones surviving themselves
Do you know any reincarnation(MC:FL) where they actually have an arc of them as a baby/small child?
Probably not the one, where they're trying to survive by kissing up to they're Da- Father though. (Seen too many of those ones)
These are ones I've already seen/checked out:
•Suddenly became a princess •Laby Baby •twin siblings •Daughter of the Emperor.•I Became The Emperor's Daughter One Day •Am i the daughter?
(Anything with "Daughter" I've probably read)
More similar too:
•the villiness wants to marry a commoner()
•Drop!! the tale of the fragrance princess().
•I'll be the Matriarch in this life.