The original DJTJr post has these links:
https://www.instagram.com/p/CaAxkTnO2jP/
https://www.instagram.com/p/CZ_-qHkOMIP/
https://www.instagram.com/donaldjtrumpjr/
I do not have Instagram, can any anons confirm who do have an account.
I think it is very important to know whether or not this is real because he said he will be back soon.