It is not uncommon for secondary lower buds to mature faster than the main colas. This can be due to several factors including light distribution, airflow, and the plant's natural growth patterns.
Yes, you can harvest the secondary lower buds first and leave the main colas to mature further. This is known as a staggered harvest and is a common practice among growers. It allows you to ensure that all buds reach their peak potency and flavor.
Carefully cut the lower buds that are ready for harvest. Use sharp, sterilized scissors to avoid damaging the plant. Make clean cuts to prevent stress to the remaining parts of the plant.
After harvesting the lower buds, continue to provide optimal conditions for the main colas. This includes maintaining proper light, humidity, and nutrient levels.