My skin changes with stress, poor sleep, or travel. Should I replace everything?

I would not replace everything at once. Note what changed and whether the current routine now feels irritating. Temporary changes in recovery and tolerance are a reason to simplify, not an automatic reason to replace products that were previously working.

Do not rebuild the whole routine during a temporary change

My preference is to keep comfortable basics and avoid adding new strong products during an unsettled period, then reassess one change at a time.