Ask him for help, then do it your way.
In an adult relationship, your man is your partner, above all else. If the two of you were equal partners in a business, each would need to be responsible for his or her own job in order to be successful. Your relationship works the same way. Obviously, entrusting someone to do something, then circumventing their efforts to do it yourself is textbook undermining. In a relationship, you’re undermining his entire manhood.