Iaido takes place in action. either your active practice, or your active interaction with your teacher your dojo mates, and the environment we practice in. being locked away and unable to maintain this action poses a additional challenge. - a very similar challenge you would face if you move away and have to establish your own practice.
find a specific time when you will practice
define the place where you will practice
make sure that this time is undisturbed. (no cell phone, children, et
choose a short time, actually a time so short that you will feel not having done all you wanted. (start with max 30 minutes)
maintain this short time for 4 weeks, or 10 practices
allow yourself 5 minutes increase, of your practice time
continue in that fashion until your practice-time has reached a maximum of 2 hours.
a word of caution. when you plan your practice, make sure you take in consideration, work, family life, recreational time, ..and then find the spot for your personal practice. make your practice sustainable.
if you follow the above and make this effort, you will establish your personal practice and will be able to maintain it even when the forced home stay is over and the Dojo is operating as place of practice again.