Dear sir, I just saw yours and your wife's charts , you both have ketu in 8th house which is very good for spirituality but materially it detaches you and this is placed in 8th house which is house of libido which explains your problem in sexual activities , further more you have Venus in 12th house in your chart now generally it is good placement but it is placed in dhanu rashi which is Jupiter's and is a fiery sign while Venus is watery element while also Venus is in enemy sign and 12th house shows bed pleasures and thus this creates problem in pleasure in bed as you are encountering currently , you will get the urges but due to these problems you will not get satisfied . also I have seen in both your charts sun and mercury are influencing both of you, so it is shown that both have ego problems in a sense that both of you need validation from other to feel better one way or other , so there are few remedies here though you have to both be involved in this for it be effective, first if you are not doing start doing daily surya argya and if possible moon argya too , start aditya hridayam stotram and navagraha stotram daily, also start feeding black dogs for ketu remedies, also both of you should like young couples start with holding hands and start doing small intimate actions daily start small and for Venus since it is signifying luxury buying silk items and sensual items should help in department , biggest thing is you should start touching each other because as ketu signifies detachment your touches link you mind together, and, don't be like let her do it first then i will do no it wont work like that both have to be involved because sun while egoist is very very caring if you show caring you will definitely get that care back , also if possible both of you should do Vishnu sahastranam stotram daily it has the power to nullify all the grahas they are in lord Vishnu's control. Also praying to lord Ganapati helps with ketu. Also there may be different solutions to this and you can consult other astrologers on this i gave you what is my opinion and you may and may not follow them as per you may wish, I have given you advice with focused more on self improvement and godly blessings , you can may be do all this with other ratnas too. if you do follow my advice then do update me on this if you found anything beneficial. also in the end sexual intimacy is all about being comfortable with each other start being open about your like and dislikes and start respecting each other and don't force each other but also be open to new experiences and instead of jumping straight to main course take it slow and be sensual . also last advice you have a good placement of ketu start doing sadhana it will bring benefits for you both in all the life's that are to come. Also I am in no way to be held responsible for any of this advice and your experience since this placements are of your karmic deeds of past life and that has nothing to do with me , I did my karma in giving you advice that's where this ends . thank you.