Decline an interview if I'm not ready?

Recently got invited to an interview with Apple for a DE role and they expected DSA for the technical round. Tbh I have not done any leetcode in over 6 years and don't think I can pick it back up in a

Recently got invited to an interview with Apple for a DE role and they expected DSA for the technical round. Tbh I have not done any leetcode in over 6 years and don't think I can pick it back up in a week provided that I'm also working full-time. Should I decline the offer or take it anyway? Ideally not be get blacklisted if it goes horribly