If I'm not wrong, CNY does last 15 days, but the holiday in China for cny is 2- 8Feb.
A huge country like that takes a very long time to "reboot" and load it's "OS"

I'm expecting to get anything done only by march taking into account that the courier services and other misc business supporting the business needs to be ready.
This is also notwithstanding the orders from the entire world is on back order for Q2 and Q3.
The main hurdle is the bureaucracy and red tape the secondary one is that how the service providers arranges with the chinese company on their schedule, if the reshelling company is not ready to handle the orders, then it'll also delay (if you batch too many and send it at one go to save on postage).
Re shelling as it is a very low margin service, there is more incentive to sell you customs than re shelling as the raw materials can be gotten direct from factories in china.
So again it depends on who is providing you the service and is there certain process management in place plus business ethics to turn down customers and lose profit but maintain service integrity and honesty.