When to introduce the bottle

Hartley

So I've been exclusively breastfeeding, and it's gone relatively well ( the first week was rough!) besides can bit of oversupply and his fussiness. Now, my little dude is 5 weeks old and I am wondering when is a good time to introduce the bottle without disrupting the breastfeeding? I'll have to return to work in a month and I know it's necessary, but I don't want to risk doing anything too early.