Breastfeeding and supplementing

I breastfed my son until he was a year old and during that time I had so many ups and downs.. from him wanting to eat every 2 hours, to being forced to pump in my works bathroom because we don't have a closed off office for privacy. I work full time and have to go back after having this baby and I am literally dreading the pumping. I never got enough at work and had to get up at 3am just to pump enough milk for the babysitter to feed him. I plan to breastfeed when I am at home, but cut out the pumping process and use formula when this baby is away. Anyone else planning this? Or have done this? Is it an easy transition or do you have any tips?

Thanks!