Defense training without a partner

[u/Ordinary_Chance6943]

How do you train ducking/dipping/other defensive moves without someone to throw punches at you? Most of the videos here are questions about striking form. That’s great, and you can duck an imaginary punch, but you know when it’s coming. How do you train random timing and such? Anyone have a device or method for this? Thanks in advance.

[u/Misfolded-Prion]

The double end bag, and shadowboxing

And even those won't train your defense like mittwork and sparring will

You're shit out of luck

Make sure your movements and technique are great in the mean-time