i hurt him. any advice needed please :)

i met this guy after being in a really bad toxic relationship for years, my toxic relationship affected me so much and i got with this new guy in a month after me and my ex broke up, so i never really had time to heal or learn or anything, and i carried many toxic traits from my past relationship that hurt my current partner so much, and i did a lot of stuff that hurt him but he always gave me new chances, all the time. he gave me 3+ chances and i managed to ruin them all and he was done. now he asked for space to heal from the stuff that i did and says he doesn’t know if this space will fix anything but he’s trying, and he says the space might go on for a month or more, i’m scared that the space doesn’t heal him and that he decides to move on afterwards. he promised me he won’t talk to any new girl/flirt or anything and that he wants us to focus on ourselves and that if it doesn’t work after this space then it might work one day in the future. regardless i’m terrified he decides to move on later and realizes that he’s at peace without me, i did change a long time ago but he’s still holding onto mistakes from the past that i did. i really miss him and i don’t wanna lose him, i don’t know what to do...