Water your olive weekly or every time the top two inches of soil feel dry.
Use a balanced fertilizer that has nitrogen, phosphorus, and potassium in the ratio of 16-16-16 or something close.
A potted olive tree requires to be repotted every few years. Unless there are some problems with olive trees in pots
It requires a temperature between 15 to 20 degrees Celsius. The absolute maximum temperature can reach 40 degree Celsius without causing damage, and the minimum should not fall below -7 degree Celsius.