I'd say first stop thinking you are going to fail before you even start. If I sit here and convince myself that there is no way I'll be able to front squat X pounds later today....then yes I will fail.
IF you do fail next week then that is the time to be thinking about changing it things up. I'd think about subbing flat bench in for something else like incline for a few weeks while still working flat with some speed stuff @50-60% of your 1RM. then going back to flat after a few weeks.
"And for crying out loud. Don't go into the pain cave. I can't stress this enough. Your Totem Animal won't be in there to help you. You'll be on your own. The Pain Cave is for cowards.
Pain is your companion, don't go hide from it."