I'll personally just decap all the vials, throw it all into a beaker, add the MCT oil and refilter all into new vials, this is just because I have tons of sterile vials and my vials are just better in anyway to his vials (even tho his vials are ok hey, I'm not shitting on dutch). It's just more conveniente to do like this for me.
You don't need to reheat anything, just pull 2ml and add 2 ml of sterile MCT and pour those 2 extra ML of TNE in a sterile vial and keep adding TNe from the other vials to that new vial while diluting with sterile MCT the other vials of just do whatever it's easier for you.
Heating the solution it makes just the filtering quicker, apart from that it doesn't change anything