leaving 2 and a half month old alone with dad for 4-5 hours one day a week

Have you ladies ever left a 2 and a half month old alone with dad for 4-5 hours one day a week. I'm due in 10 days... She'll be with me most of the time but I'm signing up for a class for school on saturdays and dad would be watching her alone for 4-5 hours each Saturday. She will be about 2-2.5 months old when the class starts.. I plan to to breast feed though I can pump bottles.. she will be in daycare 5 days a week, but I will be a teacher in her class.. so I'll be always around her.. I trust dad 100% ! I just want to know if she's going to be able to be without mom for that long ??