Pending H4 EAD. H1B renewal coming soon. Concurrent H4 EAD filing? Urgent Query.

[optimum10]

Hi Friends,
My notice date for H4 EAD is May 17, 2018. As of today, my application still shows as 'Case was Received' & no further updates. I have also opened a service request with USCIS asking for status since its been over 90 days.

I have following questions:

My husband's H1-B renewal is coming up & his company will be filing for his renewal in Premium Processing. I have seen multiple posts online that people have received their H4 EAD card within 15 days if filed together with H1B renewal.

Can I file for a NEW application for my H4 EAD along with my husband's H1B renewal? Does this cause any duplication issue since I have already have a pending application with USCIS? 

The issue is that I don't want to wait for my current EAD card anymore as its taking really long. I am afraid that H4 EAD rule might be revoked if I wait too long.

Thanks for your help. Appreciate any feedback.