Pickware WMS plugin on Shopware 6

Hello everyone!
recently our team created custom plugin to Shopware 6 for one of our client but now we are facing the problem with lack of WMS Pickware plugin (it is only available for Shopware 5 and the version for sw 6 is planned to be relaesed on March 2022 and we can not wait so long). Have someone of you got the same problem? Is there any substitute for this Pickware WMS plugin or have someone found any workaround how to use this WMS plugin using sw 6?