I have a similar IPM to
@Rurumo.
For botrytis:
Veg
Regalia foliar
Potassium silicate foliar
Chitosan foliar
Garden Friendly Fungicide foliar
I probably spray each one of these once every 2 weeks with a yucca wetting agent.
Flower
Regalia soil drench
Potassium silicate foliar after rain / morning dew to kill spores. Has a high pH
Garden Friendly fungicide foliar (not very frequent)
Chitosan soil drench
For pests:
Grandevo
BT
Bt is once a week at minimum. Grandevo is the shit for any sucking insect. This year I've only had to spray once and I don't see any insects anywhere. It probably helps that I spray my entire yard whenever I fill up my sprayer. I tried citric acid but the low pH was actually favorable for botrytis.
Overall my two biggest battles are botrytis and caterpillars, both of which require prevention rather than treatment.
I'm also a firm believer that constantly maintaining a good microbe mix in your soil helps with both pests and mold. So I give EWC compost tea every 2 weeks and EM1 every week.