Maybe try setting deadlines for the things you want to book, so that he doesn't think that you are rushing into decisions.
For example, say "We need to have a photographer booked by the end of the month" and then show him samples of various photographers work.
When it gets closer to the day ask which was his favourite, if he still has no opinion say that you are going to go ahead and make the decision because you are running the risk of waiting too long and the one you want already being booked.
Maybe also drop some hints that some of the ones you have called have already been booked for your date - he might see the urgency of it a little more then!
If he still does not help you make a decision, I would go ahead and pick the one that you think is best. It'll work out fine...
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