4 month sleep regression...please help

LO keeps waking up like every hour. I have to nurse her back to sleep or use pacifier and sometimes that doesn’t work either. We have the magic Merlin suit. It worked great the first week or so and now doesn’t do anything. This has been ongoing for a few weeks now. What else should I do? Husband and I are losing sleep because she keeps waking up. I don’t even mind if she wakes up if she’s hungry like every 3-4 hours which is what she used to do. Every hour is killing me. Help.