President Trump continued to attack the NFL early Tuesday, slamming its ratings and claiming that viewers are only tuning in before kickoff, to see who stands for the national anthem.

“Ratings for NFL football are way down except before game starts, when people tune in to see whether or not our country will be disrespected!” Trump tweeted.

He then took aim at the Dallas Cowboys, who locked arms and took a knee along with owner and Trump supporter Jerry Jones before Monday night’s game against the Arizona Cardinals, who made the same gesture.

“The booing at the NFL football game last night, when the entire Dallas team dropped to its knees, was loudest I have ever heard. Great anger,” the president wrote, though only a smattering of boos was heard on TV.

“But while Dallas dropped to it knees as a team, they ALL stood up for our National Anthem. Big progress being made – we love our country!”

Trump also noted that “the NFL has all sorts of rules and regulations.”

“The only way out for them is to set a rule that you can’t kneel during our National Anthem!” he wrote shortly after 9 a.m. — about two hours after he ended his early morning NFL tweetstorm.

His missives are the latest salvos in a firestorm that erupted during a speech in Alabama on Friday night when he suggested that team owners should fire or suspend players taking a knee.

“Wouldn’t you love to see one of these NFL owners, when somebody disrespects our flag, to say, ‘Get that son of a bitch off the field right now. Out! He’s fired!,’” Trump bellowed to raucous cheers.

Facing a backlash, Trump has denied that his condemnation has anything to do with race.

“It is about respect for our Country, Flag and National Anthem. NFL must respect this!,” he wrote.

And on Monday he praised fans who booed NFL players taking a knee during “The Star-Spangled Banner.”

“Many people booed the players who kneeled yesterday (which was a small percentage of total). These are fans who demand respect for our Flag!,” he tweeted.

More than 200 players took a knee as hundreds of others, including some coaches and owners, linked their arms in solidarity during the playing of the national anthem.

“Tremendous backlash against the NFL and its players for disrespect of our Country,” Trump tweeted Monday evening.

NFL Commissioner Roger Goodell weighed in on the controversy by assailing Trump’s “divisive comments” — saying they “demonstrate an unfortunate lack of respect for the NFL, our great game and all of our players.”

Trump has been criticized for focusing on the NFL while hurricane-battered Puerto Rico faces a humanitarian crisis.

He finally mentioned the decimated US territory Monday night when he tweeted: “Texas & Florida are doing great but Puerto Rico, which was already suffering from broken infrastructure & massive debt, is in deep trouble.

“It’s old electrical grid, which was in terrible shape, was devastated. Much of the Island was destroyed, with billions of dollars owed to Wall Street and the banks which, sadly, must be dealt with. Food, water and medical are top priorities – and doing well.”

Meanwhile Tuesday, Trump also gave another shoutout to Sen. Luther Strange, whom he has been backing in Tuesday’s runoff in Alabama against Roy Moore.

“Luther Strange has been shooting up in the Alabama polls since my endorsement. Finish the job – vote today for ‘Big Luther,’” he tweeted Tuesday.

But a pair of polls Monday showed Moore beating Strange — who was appointed to the seat when Jeff Sessions became US attorney general — by double digits.