There are two parts to your question:

Improve Demand Forecasting

• Improve current forecasting process, remove manual workaround as much as possible & drive automation
• Drive collaboration with Sales, Marketing & Finance to achieve a consensus forecast which is in line with market demand
• Use apprpriate technology/tools for stastical forecasting, using ML/AI if possible
• With all these changes, you will need to train people and change manage the transition to new ways of working

Increase Frequency of Delivering good to Distributors

• This will require inventory management & optimisation at the warehouse i.e having the right stock (not too much or not too less). Again, same approach- improve the process and use right technology/tools
• Optimise the distribution network (via a partner such as DHL) to ensure delivery times & frequencies are met. Manage the partner through strong SLAs

In supply chain everything is connected. Localised improvements will only give marginal benefits before the problem piles up.

Demand Forecasting-> Supply Planning-> Inventory Management-> Sourcing & Procurement-> Manufacturing-> Delivery & Distribution- > Returns

(editiert)