1. To adapt, conform, or acclimate to a new or altered situation or environment. I've got to readjust to the way I do my work now that I'm in this new company. I always find it hard readjusting to daylight savings time.

2. To change or alter something in order to adapt, conform, or acclimate it to a new or altered situation or environment. In this usage, a noun or pronoun is used between "readjust" and "to." We're trying to readjust our business model following the recent merger. She needs to readjust her expectations to the way things have turned out.