for the maintenance, only the mixture with carnauba will be necessary.
Depending on the use, once every 2 years. You can only apply a new coat on the most worn areas, the other areas where don't you step on, can last more years.
If the wood is in good condition, you can apply the oil without sanding.
Try not to wet the floor too much when you do cleaning.
Where to obtain materials and tools that I use