Hi there and welcome!
I started out with five decades of the rosary and the chaplet of Divine Mercy. 45-90 minutes, depending upon how distracted I am.
It’s the best part of my day!
I sometimes sing the chaplet of Divine Mercy or Ave Maria while I’m working on chores. And I’ve noticed that I’m saying a lot of little quick prayers throughout the day. Something will cross my mind and it’s just a few words. If I see something on the news, for instance I’ll pray, “Oh, Dear Jesus, please help those parents! Blessed Mother, comfort them!”
You can pray the rosary any way that you want to. You can pray a single decade or five or all fifteen or twenty decades. (some people do not use the newest “Luminous” meditations)
You can even say a single prayer - “The Lord’s Prayer” we all know from Sunday School, right? You could simply say that over and over again, thinking about what the words mean as you say them. There are depths to be plumbed just in that prayer, alone. Jesus himself gave us that prayer and like everything else he did in his short ministry that was documented, he gave it to us for many reasons.
And you can ask questions. What does that mean, God? What should I do? I don’t understand this. Why is it in my life?
You can tell God that you’re happy, sad, mad, that you don’t understand something, that you don’t know what to do, that you don’t even know what to pray for or how to pray. But, you’re here anyway. And you want to listen, but you’re not sure how. He knows your heart.
You can say, “I’m not even sure I believe this, but you told me to do it, so I’m doing it and I’m trying to believe. Help my unbelief.”
And you can ask the Holy Spirit to fill your heart and to pray for you, if you don’t have the words.
I hope that helps, some. I spent 48 years as a protestant and then a new-ager and pagan and I’m only two months into the realization that I am Catholic, so I hope that none of this is wrong. But, I know you’ll get responses from people a lot more knowledgeable than I am.
Good luck and God bless you!
Elizabeth