First of all I know this is an old thread but I found it while Googling “falling asleep while praying the rosary.”
I also struggle with falling asleep during the rosary. It doesn’t seem to matter what time of the day or if I am driving or sitting at my desk or kneeling. I get very drowsy and nod off and feel terrible about it. I used to say the rosary in bed with my husband but he would get furious with me when I fall asleep.

I told him he waited until it was too late to start one! We have yet to find a good time for both of us to do one together so we are doing them individually for now.
I have come to the realization that it is not necessarily a bad thing to nod off during the rosary because it is a meditative prayer and makes you very relaxed and peaceful. I am going to try to do it while walking or pacing and see if that helps.
I too have to fight my mind from wandering. I have a booklet on how to pray the rosary and it helps me to look at the pictures of the mysteries to keep my mind focused.
I also joined the Rosary Confraternity @
rosary-center.org and that helps me to keep the commitment of saying the rosary every day (or at least every week day). In turn you pray for the members and they pray for you.
I just converted to Catholicism this Easter but I have been saying the rosary maybe 9 months or so before my conversion after my husband (a cradle Catholic) introduced me to it and told me about the promises and everything associated with it. When I started praying it I had no desire to convert to Catholicism. My husband didn’t ask me to convert nor did he push it on me. But somehow between the rosary and wearing a scapular my mind was changed! We have been married 7 years now and it was never an issue. I have only been a Christian for the last 3 years (my parents did not bring me up in the faith at all). My husband wasn’t practicing his faith at the time of our courtship and marriage. We just renewed our vows in the Catholic Church so now we are both full members of the church. I have to say I’ve had communion in protestant churches but it is not even close to the Eucharist in the Catholic Church.
Anyway, I am rambling a bit but thanks for the helpful thread and I will put some of these tips to work.
Blessings to you all!
Chenell