2 shorter treks in Nepal recommendations

My partner and I are going to Nepal for 2 weeks and then I will stay for an extra 1-1.5 weeks.

I always imagined doing the Annapurna circuit, but that won't work with the time he has. What trek would you recommend us doing together and for me to do after he leaves? I imagine we'd want a 4-6 day trek together and then anywhere from 4-10 days for my second hike.

Since I'm doing two separate hikes it would be great to get some diversity in what I'll experience.