Not enough hours in the day! Maci Bookout and fiancé Taylor McKinney butt heads over time management in Teen Mom OG's Monday, February 22, season finale, as seen in Us Weekly's exclusive sneak peek.

The MTV series' footage shows the pair bickering over their schedules, with Bookout, 24, unhappy that she hasn't been given enough notice about the social-media assistance that McKinney, 26, needs, given that they are also are busy raising two kids. The couple welcomed daughter Jayde, 8 months, in May, and are expecting their second child in May 2016, while Bookout has son Bentley, 7, with ex Ryan Edwards.

"I can't be doing this four days in advance again," she complains. "I'm up till 4 a.m. every night. I mean, I think we legitimately need to put a plan together."

McKinney fires back, saying he doesn't appreciate how he's being treated.

"This whole talk f--king sucks," the sales rep says. "I'm sitting here feeling like I bought a company, and I'm being pointed at like the idiot, like I have no clue what I'm doing."

Watch the couple's heated exchange in the video above.

Teen Mom OG's two-hour season finale airs on MTV on Monday, February 22, at 10 p.m. EST.

Can't get enough of Us? Sign up now for the Us Weekly newsletter packed with the latest celeb news, hot pics and more!