I have Invisalign (express and top only) and read somewhere that you should wait 30 minutes after eating to brush and reinsert the liners. Is that true? Also, if I use ACT/fluoride mouthwash (total paranoid about cavities with liners), should I wait to insert the liners too? I tend to want to swish water a lot in my mouth when I have the aligners in, is that good or bad?