Opk without becoming dehydrated

So for a couple months now I've tried to opk. January I never even got anything near to a positive I think but someone suggested I could have been diluting it as I wasnt holding my urine or not drinking for 4 hours.

I've tried to do it this month and got something that was almost a peak according to glow but not quite then it went away, in the end I lost my temper and gave up.

Getting stressed with it all now I just want a baby.

It's not ideal for me to not drink or hold my urine for 4 hours and now I've ended up with thrush ( sorry tmi) as well as being diabetic and on a health kick so am trying to get at least 2 litres in a day.

Is there any opks I dont have to hold my urine or not drink for 4 hours?

I did debate not bothering with them but DH has abnormal morphology so i really want to give us the best chance by DTD as much as possible around ovulation.

Pics of last two ovulation cycles below.