The Rabbinical Assembly (of the Conservative Movement) has created a "virtual seder" on YouTube: A Seder Made to Order - 5780/2020 I don't have time to watch it because I am in the midst of cleaning and kashering and "turning over" my kitchen for Passover. But it sounds like it could be a good learning opportunity for prospective converts. And this year, if you are a prospective convert or a Jew by Choice who has in the past felt left out by not having a big seder with extended family and friends to attend, you will be in the same situation as most other Jews who will be limited to in-person seders with only the members who live in their household, although many will join with others in virtual gatherings with Zoom or FaceTime.
Chag samech v'kasher. Although this year will certainly be "different" ("mah nishtanah?"), I hope you all have a meaningful holiday.