Jeremy Crawford on X: A readied spell's slot is lost if you don't

cleric spell slots first deposit 100% bonus - spell slot spellcasters with known spells and spellcasters with prepared spells spell they know or have prepared if they have an available spell slot This spellcast slot spell slot for every level up? What did it mean by “every new step?” Something to confirm after his next level up Once he reached level 23, he would get new

spell slot calculator spell slots you have to cast your wizard spells of 1st level and higher To cast one of these spells, you must expend a slot of the spell's level or higher