Also try and contact your regular customers and see if you can agree forward orders direct with them. They will also be struggling to forecast and so maybe you can agree favourable pricing terms to guarantee them 60-80% of their orders which will give you more certainty for future demand.
Staying in touch with your core customers is a very good way of ensuring you are on top of any changes which are happening in their businesses which could also impact your own. This gives you more visibility as a caring supplier but also it’s market research from the front line, directly relevant to your business.
Set up a schedule of fortnightly calls by your sales team and see what they report back.