Hello Dana,
I am from Ma.
my husband divorced when his youngest was 6 months old.
he had NO real experience with babies, his ex never let him near the kids during marriage.
I have to say, unless she can prove major detriment in court, what your lawyer told you, is not really true in all cases. There are NO infant visitation guidelines for Ma. the basic ma. guideline is "reasonable between the parties"
If though, you are pushing for no overnights, you may find yourself back in court, if you start denying him visits based on that belief.9get slapped with denial of visitation to many times your custody can end up in jeopardy) so it may be wise to go into court NOW offering him overnight visitation to begin with, that way you both may be able to work out something that is good for all 3 of you.
my husband and his ex, immediately started out with reasonable visitation, and yes, the baby had overnights. The massachusetts courts WANT overnights to give BOTH parents important bonding time.
It was very tough for him at first (think 3 men and a baby...) and there were times when he had to call his ex or his mom for help, and even his own childless(!) brother to help with bath time. It was a real trial by fire. I am sure there were many times "rules" were broken, and the baby didn't go to bed on time or stayed out late or ate to much "junk" but this baby grew up and is now a happy healthy 7 year old, and I think has the closest bond of his kids with his ex, due to his "trial by fire"
having met a few divorced dads since, I can say, a man looking for help from others is not really an automatic "abuse flag" its just someone who may just need help.
one thing you have to get used to is the fact that divorce just makes things slightly unorthodox, when it comes to raising a child. it sounds crazy but, in a way it will end up being easier because your child is so young, it likely won't be as hard for him to get used to 2 houses and 2 sets of rules.
One thing I found helpful was the court ordered parenting class,(in Ma. it is mandatory-or at least was within the past few years) if you go into it with an open mind, you may find it will help alleviate some of your fears.
best wishes for a happy outcome for your child.