The original sentence has a couple of grammatical issues, particularly in the second sentence where "weeks" should be singular ("week"), and there's a missing comma after "Ok." Here's the corrected version with a rephrasing:
**Corrected version:**
"It's okay; go disappear until you feel like yourself again. This past week has been a lot."
**Meaning:**
The speaker is telling someone that it's acceptable for them to take time away or to