OK but can you tell me what you did, how much you overpaid your self and how much is involved.?
£6000 is quite a lot and it went on for a long period so it was not impulsive.
Also where a position of trust is involved it is regarded seriously
You need to offer to pay it back but provided you do not have any previous convictions for a similar style offence you could avoid prison.
Clearly you were under pressure and this is a mitigating factor