Leaving month old baby for 1.5-2 hours?

[onthefly]

I would suggest planning to have baby nearby just in case, and have some sort of contingency in place. It might be fine, but you just don't know for sure how things will pan out between now and then. Perhaps if baby were sleeping happily in a sling you wouldn't have to be away from her at all?
Fingers crossed and hope you friend's defence goes well.

[Marley&Me]

Depends how often bubs is feeding. My dd fed every 3 hours give or take. You could feed right before you leave and give your DH an expressed bottle just in case. Have you given a bottle before? My only concern would be if bubs refused to take a bottle if hungry before you got back. Worst case scenario bubs will be a bit upset/hungry until you get back, but if your not going to be hours I'm sure it will be fine. I would do it.