How do I prune this plant...

Hi there it's been a while since I've been on here.... We've let these go a lil too long before pruning. How do you guys suggest I get started? This is a Bernie Mack clone.

Just clean up the under growth so nothing is touching the ground and then tie those side branches down to open up the center. No need to trim anything else in my opinion.

I’d say the same. I don’t think you have left it late.
Clean off the bottom third is what I usually do.

Clean away all the trim, cleanliness=godliness etc.
Fresh mulch underneath. I go for good airflow under plant and fresh sugarcane mulch to keep the moulds and such from the ground in check.

Some net could have been good a bit earlier on.
Could still work a bit of net to support them.

Otherwise ‘get in there’ with some bamboo stakes and electrical tape and set some bracing for the main branches after you’ve cleaned off the bottom third.