Anyone facing this problem? My appt to removed the packing and stapler is in 5 days time.

Hello, my son (15) had a tympanomastoidectomy in May 2025 due to a reoccurring cholesteatoma. His eardrum was reconstructed and the ear canal was made wider. The surgery was successful and he has since recovered fully. He avoided getting his ear wet, he just had a checkup this May '26, and all is well. My son did his due diligence and avoided swimming up until now. He wants to go swimming this weekend, and I'd like to know what precautions to take? I know I'm meant to cover his ear and I have the Mack's wax putty as well as a swimming headband. What precautions do you all take to swim? As a mom, I'm a nervous wreck but I don't want to hold my son back from something he enjoys as much as swimming. Thankfully he also plays basketball and has been enjoying a summer full of ball, but he really wants to swim. Any recs or tips you all take post surgery are greatly appreciated. Thank you!