@heavyphil The most difficult part for my husband was to find the right amount of water and right time to drink to keep the bladder full each day. It took him 3 days to get the right amount (550 mg) and time (45 mins before treatment). For bowel prep, he used enema (5mg) 2.5 hour prior to treatment and then take Movicol (Miralax in US) every afternoon because he had difficulty sometimes. It helps with the "full bladder & empty bowel) on daily basis.