I can't really offer any suggestions but I can tell you it does ease off a bit. I was getting up 2 or 3 times a night for the first 2 or 3 weeks, but now (I'm currently on week 2 of development) I only have to get up once a night. If you can try and drink your 4 litres of water earlier in the day and not drink loads before bed then that should make it a bit easier.