Bud rot/outdoor/pk boosters

Boosters or no boosters rot usually comes from lack of air movement between branches, leaves and buds. If all your branches, leaves and buds are holding humidity between them then you get mold. Try to remove more leaves next time especially dead ones and train branches away from each other to avoid pockets of humidity. Check your grow area and make sure theres no other dead plants that have mould as they could be passing spores on to your healthy ones. Any buds with rot should be completely removed. Rotting plants should be kept away from healthy plants. Get a poly tunnel to protect outdoors from rain and make sure its got good airflow in it to tackle humidity buildup. Also bud rot affects weak parta of plants such as sites where pests have been feeding such as gnats and caterpillars so make sure thats not an issue. Personally I would cut my losses clean everything and start again but I know thats easier said than done when you have invested 3 months in it.