Don't use Multi Gyn everyday - too acidic. I also find that Vagifem can make me burn a bit if I use it too often. Use more SYLK and perhaps some coconut oil as well.
Perhaps reduce back to every other night for Vagifem. Drink lots of water ( no caffeine, fruit juices or alcohol)
And bath with water that has bicarbonate of soda in it. Put you feet up for an hour midday, I find this takes the pressure off the urethra and eases the burning.
Also, try to relax your pelvic floor more - when it's burning you will probably be clenching more and this doesn't help. Learning to relax the pelvic flora is as important as exercising it to keep it strong. DG x