sooo my hubs parents are from mexico and as always us Mexicans have cetains remedies and myths we go…

sooo my hubs parents are from mexico and as always us Mexicans have cetains remedies and myths we go by . well my baby girl was making this sucking noise (1 month) my MILsays that my baby's 'moietta" caved in and needs to be fixed, her soft spot I guess can cave in if baby's get scared they forget how to suck or latch on right also looses appetite. is this thru???