It is normal for babies to need night feeds in at least the first two months, whether or not you breastfeed. The current advice about formula feeding recommends making one feed up at a time, when the baby is hungry. Think what it must be like doing that, 2 or 3 times during the night, as opposed to simply putting a baby to the breast! I think it would be very easy to make a mistake.
When I became a mum, in the 1980s, it was seen as more efficient to make up a day's supply of bottles at once, and store them in the fridge. There are many healthy adults around today, who survived this. An alternative, is to buy some ready-to-feed bottles and keep them for night feeds.
On of my friends switched to formula in the first 3 weeks, on her doctor's advice. She thought 'at least I can share night feeds.' But her husband slept through the baby's crying, and trying to wake him when it was his 'turn', was more bother than doing the job herself. This might be because the mum's hormones make her react to the baby quicker.