I enjoy y seams! I just go slow and as I come up to the dot I gauge whether my current stitch length will land me on the dot. If I think I am going to be off I lower my stitch length to ensure I land on the dot. Then pivot and keep sewing.
I didn't go into it thinking it was a scary thing, I was shown early on by my quilt instructor when learning a lonestar and as she didn't make a big deal out of it, I didn't stress and it came out perfectly.
So just relax, take your time and do it. Have fun!