No matter how busy you both are, set random weekly calendar appointments to drop everything and spend 10 minutes together—in person, via Zoom, on the phone, etc.
For the person who feels loved through Physical Touch, consider giving a back scratcher or massager that you can use to administer some relaxation sessions.
Does your loved one love a particular sports team? Pick up a hat or a jersey you think they would look great in, or get yourself a matching one and cheer them on together!
Fill out an organizer with relevant birthdays and special days and then give it to your loved one! For the one whose secondary love language is Words of Affirmation, include a few loving entries every month.