I'd recommend getting a new Apple ID for more accurate results and overall a better experience!
I understand you use apps like Calendar, Music, Contacts, Notes, etc. and want them to sync between your devices and your husbands. Apple has a feature called Family Sharing that will share these app purchases and subscriptions. You can learn more about Family Sharing here: Family Sharing - Apple.
Calendar:
You can create custom calendars within the Calendar app and share that new calendar with your husband. Every event you add will also appear on your husband's devices even though you're under different Apple IDs. Create a calendar on iCloud.com - Apple Support
Once you create the calendar share it with you husband's email.
Music:
Setup Family Sharing and that way you can share subscriptions. You'll need to upgrade your plan to "Family" instead if you haven't already. If you pay for multiple Apple subscriptions I'd recommend Apple One - Apple. You'll be looking at the "Family" plan on Apple One.
The Music app has profiles built into it where you can search friends and look at their public playlists. This way you don't have to constantly share the playlist when a new song is added or removed.
Health:
Within the Health app you'll notice a tab at the bottom for "Sharing." Under this tab, you'll be able to share your health information with doctors and anyone you trust. You get to choose what is and isn't shared with people. This will still allow you to see your husband's current health and receive updates.
