Sleep Struggles

Hi ladies, I need some advice my exclusively breastfed 5 week old struggles to fall asleep for night and day time naps we've tried:

swaddling

full feed before bed (30mins)

white noise

pacifier

reading

warm bath

sleeps in her own crib

quiet darkish room..

Am I missing something? It takes my husband and I a good 1.5hrs to get her to sleep with lotsa rocking, shushing, cuddles and patience once she's down the max she slept is 2.5hrs.. if we're lucky. She does fall asleep within 10 mins if she's in the baby wrap carrier I use it sparingly as it's not a feasible option for us if we have to do it 5/6 times in a 24hr period.

Love her to bits but I'm starting to get that crazy twitch in my eye as this has been going on since her birth.