In addition to @Opus 17 comments, note that Form 8829 is only for the Business Use of Your Home. It should have been calculated for only the area of your home that is exclusively dedicated to your home office. See: 2020 Instructions for Form 8829.
The residential energy credit is limited if the business office square footage is more than 20% of the home.
The 2020 Instructions for Form 5695 states on page 1: If less than 80% of the use of an item is for nonbusiness purposes, only that portion of the costs that is allocable to the nonbusiness use can be used to determine either credit.
