Expressing and formula

Hello ladies I’ve done a post previously regards to combine feeding!

Due to my super busy life style with a child of my own and 2 step children I’m trying to look for the best option I can which is easiest for me but baby getting the best from me also!

Would I be able to use formula and breast milk?

So I’m hoping I’ll be able to express for morning feeds and night feeds and use formula during the day ( obviously expressing in between when needed) or would you stick to just one type of milk?

Hope that made sense

Thankyou in advance 😊