Spider mites at this stage .... well there’s nothing to do... I can recommend you SNS 217 but personally I won’t spray anything on my plants at this stage !
Trim the bottom of the legs , put some more airflow, try to stay on a high RH level until the buds start to swell , and trust your plants, bugs won’t win the battle if your plants are healthy enough !
Spray plain water at pH 7.0 under each leaves , one by one .
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