1. Do an Act of Contrition with the intention of going to Confession as soon as possible. The following is taken from the letter from the Diocese of Honolulu during the stay at home order.
2. Do a Spiritual Communion with the intention of receiving Communion as soon as possible. Here is one of the Spiritual Communion prayers:
3. Say a prayer similar to the following:
"Lord Jesus Christ, you promised St. Faustina that the soul that has been to Confession (I'm unable but I made an Act of Contrition) and the soul that receives Holy Communion (I'm unable, but I made a Spiritual Communion), will receive complete forgiveness of all sins and punishment. Please, Lord Jesus Christ, give me this grace."
Jesus, King of Mercy, we trust in You.