Honestly if there are no hard feelings between yall and you feel like you can help I would reach out to him because sometimes that's all people need is someone to talk to. He probably has a hard time making friends so if you take the first step it might not seem like much but to someone that has alot of anxiety and is looseing motivation they are probably falling into a depressed state and a friend will help alot especially if you know how he feels. On the other hand tho if your just ganna be their at first and think you might fall out of the friendship I wouldnt try because looseing a new friend can sometimes make the person feel like its thier fault and put them even further down. Alot of times you dont even need to give them a solution to the problem they have or say anything at all you just need to listen and let them vent if that makes any since.