WFH killed my work-life balance, not saved it

Been remote for 2 years now and honestly I thought it would be better but it's so much worse. My office is literally 10 feet from where my kids eat breakfast. So now I'm in back to back meetings while my 6yo is asking me to pour juice, then I close the laptop and try to be "present dad" but my brain is still on that quarterly review I just finished. My wife thinks I should be able to do both at once since I'm home. Anybody else dealing with this? How do you actually create boundaries when your home is your office?