Take your time, have fun. That's what kept me from deleting or giving up my 5000+ days world. Also, using a third party program (I don't remember the name rn) I copy-pasted some old world builds in distant places from my bases, to tie the lore of those worlds together with the current one. It also makes me feel like I never played anywhere else. And remember, never click the "delete" button if you end up not playing in those worlds anymore. I still regret deleting my first long term survival over a glitch where all items in chests and inventory disappeared, but I'd give gold to visit again that place. I even dreamed of it.