That seems to be the only link or article on the matter from my brief search. When I searched "sanskrit effect on mind" this thread was the top link, so...yeah...
I wouldn't put too much effort into this unless you speak, read, write Sanskrit already. There are many things you could do to help brain development and bond with your baby without using Sanskrit. I'm not saying that this isn't true, just that I would pick my teaching philosophy, prioritize my subjects, and begin with a small routine that we could do daily.
5 words
3 numbers
20 minutes of constant talking to the baby
1-2 story books
find a way to build that into your day, keep educational dvd's on hand so that when your baby watches TV it isn't junk TV, and when you are able to be with your baby, BE THERE. Not on this forum, not in a magazine article, not at the supermarket fretting over one thing or another...be with your baby.
Talk to baby, tell them how you feel, what you're looking for in the store, the price of the broccoli, what a price is, what you want to do tomorrow, that you love the baby, etc....respond to their cooing and try to resist the "googy-ga-ga!" baby talk!
Relax, if you're stressing or worrying about this infant education gig already then you're doing it ALL wrong! Baby and moma should be happy.