It’s quite different, but I found The House in the Cerulean Sea pulled me out of the funk I was in after it! Similar themes of friendship and found family in difficult circumstances.
DH has just finished PHM and had a week of lying there with no book and doomscrolling. Last night he finally settled on Children of Ruin (the sequel to Children of Time, Adrian Tchaikovsky). I’ve not read those myself but he is much more into sci fi in general.
It’s a very tough act to follow, I agree!