What kind of changes do you make to your training in the last 4/6 weeks before a show?

This year I strained my adductor 4 weeks out (July) and biceps 4 weeks out again (December). This happened without doing anything reckless; I simply kept training to failure in the 8 to 20 reps range. I was able to compete but training was seriously disrupted.

The trick is because gear is at the highest at that time (off-season is spent in the 250-300mg range), I was feeling great and could PR almost on every session.

I’m wondering if I should I reduce the weights gradually after the 6 weeks out mark.
I know that keeping weights heavy is the best to retain size but an injury will be way worse than a moderate drop in loads, so it’s a bit a moot point.

Would it be a good idea to gradually drop 10-15% in training weights on bread & butter movements while still going to failure. A 3-5% drop each week starting at 6 weeks out?

Anything else maybe?

Thanks guys