How do I keep my newborn awake to feed?

I swear this baby would sleep the day through if I let her! She needs to start eating more but falls asleep right after an ounce of milk. I’m trying to at least get her to an ounce and a half consistently even though I’d love to get her to 2. Some times she does it others she extremely hard to wake up. I’ve tried cheek massages, chest massages, getting her naked, changing her diaper before the bottle. Those barely work and she needs to gain weight ☹️ Please send tips!