E visa

Question, so we are currently in Hanoi and we just received our e-visa. Originally we were planning on entering on the 23rd of this month. But to be honest I cant stand Vietnam and we are ready to return to thailand. Our approved date of the e-visa was on the 8th of December. Can we enter early or do we have to wait till the 23rd?

Lol I just want to leave Vietnam and want to get back to Thailand. I cant stand it here!