well, keep trying the moby- try different positions- put her in when she’s fed and changed and just move, lol.
also the infant car seat might scrunch her- some find that if you getting a regular carseat helps (I like the Britax Marathon- you can keep your baby rear-facing a long time, which is the safest- even though the law says you can turn them around to forward facing at 12months- I most certainly do NOT. the law also says people can ride a motorcycle w/o a helmet…)
anyway, if you do go this route, then you really will need to babywear bcse you won’t have the ‘bucket’ seat to lug around…