Hi

You can write a computation for the qty calculation

@api.depends('location_id')
def _compute_stock_info(self):
"""  Find stock information from the location.  """
warehouses = []
for rec in self.location_id.quant_ids:
    available_quantity = rec.available_quantity
    warehouses.append(available_quantity)

return {
    'warehouses': warehouses
}
Based on this way you can passed the quantity of the particular ware house separatly

Hope it helps