Should I mention something to my family?

Hey guys! Thx for being amazing support and helping me help my boyfriend through this hard time. Having a person who caused him song trauma come back in His life has been extremely hard and getting memories back when he has had no memories before 17 has really affected his mental health. Therapy has help a lot though. My family is heading out for a camping trip Wednesday and invited us. My boyfriend loves the out doors and fishing and feels he needs it. To get away from everything and be out doors. He's excited to leave the city but is now having anxiety. You guys already know that having all thus trauma pop back up has caused him to start peeing the bed. He recently started wearing adult diapers which help but sometimes leak. Not often though. He also had bad anxiety every time he has an accident. So now my boyfriend is having extreme anxiety, which sucks because thus trip is supposed to help with his anxiety. I'm wondering if it would be beneficial to tell my family he has accidents(of course not tell them why) that way if they do find out they won't have a reaction that will make him feel judged. Or maybe just tell my mom. He has a great relationship with my mom because she has a similar past and was always able to talk to him. I just want him to enjoy himself and relax and not worry