reseting the days?

I'm currently on day 958 and underpowered I last about 5 seconds I can't get xp to lvl my survivor to compete with the increasing difficulty of each day. The other problem is I have to much food water and defence so if I try to get my camp killed to go back 30 days its counterproductive because I estimate I'll actually gain more days. Is there a alternative way? Love the game just need to take a few steps back to lvl up properly.

P.S focus on lvling one maybe two survivors at max and not do five like me :p

You can exile some survivors to get their XP back.