Well, it seems for the time (till you meet him) the only thing you can manage to utilize is "those 10 minutes", for which you have to find out ways to convince your husband that you are more important than his friends and he may carry on with his activities with them before and after those 10 minutes. You need to be very selective and prepare before time for the appropriate words to be used in those 10 minutes.
Telling his mom or arguing with him might irritate (repel) him more with you. Better use some positive ways but before that you need to analyze his personality.
If he is a carefree less sensitive jolly person (seems more probable in this case):
Try to find out which conversation/ topic he enjoys the most (e.g. Games, celebrities, role models, sports....etc. which ever he likes). Discuss with him that topic so that he starts enjoying talking to you so much that he doesn't want anyone / anything interrupt those 10 minutes of conversation with you. BUT do share knowledge that he doesn't know already but would love to know. Try to create suspense and show excitement with statements like "I wanted to share with you something that you would (inshaAllah) definitely want to know, it is very interesting....."
Of course you are his wife and he should not feel attracted to you only because of those topics, but you might have to (even reluctantly) get more knowledge about his likings to develop "that bond" with him that forces him to consider his friends to be relatively more boring than you. Once you have developed that friendship with him, you might slowly add topics of your own interest into the discussion (with wisdom) in a way that he doesn't even realize that now he is talking about your and his relationship. This would also convince him to immediately move to a lonely place (away from friends and family) to enjoy more his conversation with you.
If he is a sensitive caring person:
Jokes are the best way to criticize a person without offending him, but they have enough penetration power of puting a part of his mind think about it.
Tell him while laughing and teasing in a light mood (but dramatically) " One day a person might read this news in a local news paper that one of his friends got severe beating by an unknown mysterious and dangerous lady, because he dared to consistently interrupt her conversation with her husband. She had to take this step because he was somehow able to convince her husband that it is alright to interrupt his wife time and again....."
Jokes like these do have a strong impact and would tease him at the back of his mind even after those ten minutes. Jokes should not be directly pointed at him but indirectly mentioned so that he realizes his mistake without being offended. The sole purpose of those jokes should be to make him realize that his wife deserves respect, and not to make fun of him.
If his personality is a combination of both, then try both techniques.
This is just my personal sincere understanding, and might not be applicable to your case. May Allah (swt) bless us all with the wisdom to be able to make the right decisions in our life and improve our relationship with our spouses.