Some 30 years ago I entered a Benedictine monastery at the ripe old age of 19 (left after just over two years, wasn’t my vocation).
They sent me a list of what to bring. I remember the trouble my mom and I had finding long black socks of all things! The list was short and to the point, if you will. They even specified which version of the Bible to bring.
It took me far longer to dispose of my earthly possessions (“go and sell [donate] all that you have… and follow me”) than it did to pack what I was taking with me.
God bless you, dear one. And may He grant you unspeakable grace and joy in this time of preparation.