"Little Season" is representative of when Satan a spirit being will be let free to perform God's will, it's relationship to "Thousand Years" isn't literal earthly time, it is one day is a thousand years time, (Not Literal)
Revelation 6:11KJV
11 And white robes were given unto every one of them; and it was said unto them, that they should rest yet for a little season, until their fellowservants also and their brethren, that should be killed as they were, should be fulfilled.
Below Is it one literal day or one thousand literal years?
(It's Neither) its symbolic speech communicating to the human mind that God doesn't have a clock at his throne, he is Alpha/Omega outside of time
Today the words would be one day is a Zillion Years (Not Literal Time)
You want to put this thousand years as having a literal beginning and end, "Wrong" it's symbolic figurative speech of one day is a thousand years
2 Peter 3:8KJV
8 But, beloved, be not ignorant of this one thing, that one day is with the Lord as a thousand years, and a thousand years as one day.