Advice on feeding newborn!

I'm a mum of soon to be three. I directly breast fed both babies for the first week then went on to combo feeding.... so formula and boob for whenever baby needed it.

This time... I'm thinking if I breastfeed during the day and do formula during the night? Is that a good option so baby is fuller and sleeps (MAYBE) a little easier?

I could never pump but I have brought these silicone things that collect leaking milk.. I could use that for bottles but may not be enough for a full bottle who knows!!!