Gearing up for his re-election campaign, Mayor Bill de Blasio plans to hold two regular interviews a week — but under controlled circumstances.

For months, the mayor has limited his open-ended Q&As with City Hall reporters to once a week.

He also usually appears weekly on WNYC radio, where he fields questions from both host Brian Lehrer and callers.

Starting next Monday, the mayor will add a second regular, 15-minute appearance on NY1 with host Errol Louis, the cable station announced.

The Democratic primary for mayor is scheduled for September 2017.