Looking For Some Advice

I'm experienced in semen retention, prostate milking and male chastity myself. I've had similar symptoms. You have trained your body to ask for a milking and your are getting it only weekly. Your body is going through the Aless in an attempt to milk itself, and possibly your body is seeking ejaculatory release. To prevent these symptoms fully would require you to surrender much of what you have accomplished - I do not think you want to do that. You might want to have a cushion of some sort available for when sitting on a hard chair - even folding up a jacket, hoodie or sweater to make a temporary cushion. You could try milking twice a week and see if that helps. You could also try to have some thoughts set up to distract your mind when this starts to happen - for example a favourite hobby or something like that. Feel free to contact me on this as we seem to be going through a rather similar process in some ways, based on your blog entries. Take care!