A previous statement, under Ren Zhegfei, said the company had prepared for this possibility. The company previously acknowledged that it had a backup operating system in case it was cut from Android, although it has not yet talked about the implementation of alternative software. Huawei was able to use the open source version of Android on their devices, although it would lose proprietary Google applications and, therefore, the Play Store.
While Huawei clearly hopes that Google can help, it is not clear that it can do much. Huawei can only help with existing phone users. Google still can not help with new devices during that period, and can not offer its proprietary software after all. As long as the business persists, it is likely that you have no choice but to explore alternatives.