August 9, 2016 1:50 PM CEST
Speaking from a male point of view, your man is not thinking along the 'age line' like you are doing. Hence he is focused on his career and finances and Ego probably.
The thing is while getting engaged you both should have talked about a timing, not leaving it open. You see, asides the age factor, leaving the engagement this long makes you susceptible to wearied passion and temptations of the flesh.
Hence I advice you to take time to pray on what God is saying about the timing of your marriage, hear God speak and direct you expressly. (If possible this should be done by both of you)
However if you do it alone, when you get a confirmation from God, approach him, talk to him respectfully and lovingly but be firm. YES, be firm about what God has said, let him see your seriousness.
A real man seeing your stance will be driven to seek God too and make necessary decisions and steps.