I’m still pregnant and don’t have any kids so only can reply from what I read and watch: it could be so-called purple period cry/ witching hour that’s start from week 2 can be up to \- 8 months, those cries are normal for baby development even tho not every baby is going through it; can last from 45 min to 3 hours in the afternoons/ evenings. Even if all needs of the baby met it still can have that cry time; have to soothe gently by rocking smoothly on ur shoulder, some parents might even go for a car ride; and there is another “magic position” kinda the womb one that might help; you can research on that purple cry period maybe it could be the one that your baby is going through; have to be very patient and calm and when u out of it have to ask husband or whoever at home for help to substitute u.