I have a routine that works great for me, I generally work a couple of days a week and always find I get a bit sore, I put this down to stubbly chins (one actually made my inner lips bleed once). So I use BV gel for one or 2 nights and a thin coating of sudocrem or bepanthem.
I do have a theory that sometimes the symptoms of thrush aren't thrush at all but your natural discharge irritating pussy lips that are a bit sore from clients chin stubble, (you know that thrush prickly feeling) In this case I put some caneston (just in case, on a tampon) and use the sudocrem, this will stop my natural discharge irritating sore lips. This works for me, obviously don't keep the tampon in too long and use the sudocrem on the outer lips not inside your vagina.