Hello!
Yeah, that's possible.
Step 1. Convert an excel file to tsv. I do not like to do this with excel software since it is often cause some issues. For me it is easier just copy the table from excel to Google sheet and download it as tsv (tab separated values).
Step 2. Make sure that your table formated properly. Just export any taxonomy.qza file as an tsv table and take a look on the format of the table. Or search for it on this forum.
Step 3. Import it to Qiime2. In this thread you can find example commands and format.