Silly question but does anyone else have a hard time holding urine to take opk?

People have always picked on me because I pee a lot. I've been this way my entire life, seems I just have a small bladder. Always before it was just kind of an inconvenience but now that I'm doing opks and I'm trying to go at least 2 hours without peeing so I can take the test I'm seriously struggling! I've stopped drinking anything an hour before and peeing as many times as possible before my 2 hour wait but there's some days where I seriously just cannot do it. Does anyone else have issues with this? Any advice? I'm worried I'm not going to get accurate results because I can't hold my urine long enough!