Baby sleep help!

My LO is a terrible sleeper. She wakes every 30-90 minutes all night long. I'm losing my mind. My level of sleep deprivation is affecting my job performance. I really need something to help make this better. We put her in a baby Merlin magic sleep suit at night. She sleeps in a crib in our room. She has zero self soothing skills. She will just cry and cry when she wakes up. She wants to be held all night. I just got her to sleep 2.5 hours by holding her the entire time. We haven't been very successful in working on sleep training because my hubby and I are both so tired, we work full time and can't afford any less sleep than were already getting. What can we do? I can't imagine it's normal for her wake this often?