Affordable Day-Of Wedding Coordinator for DC/MD/VA

As the wedding approaches (97 days yikes), I'm starting to think that I need a day-of wedding coordinator. I live in London, England (long story), but there's a chance that we will be moving to San Francisco before the wedding- which is in DC. I have a ominous feeling that things could get very chaotic and disorganized, which is keeping me up till 3 am! I spoke with two lovely coordinators who would do a great job, but at ****, at this point that's way out of the budget. The florist and the caterer are amazing, so I know that they will do a great job, it would just be nice to have someone there who can coordinate everything. I've already chosen all of my vendors and have paid deposits, etc. so I don't need help with that- it's really just the running of the wedding I'm in for. Any help and/or suggestions from the community would be so very appreciated. Thank you xx