I don't understand why people don't like baby talk. My understanding is that baby talk is an instinctive thing and that it helps children with language development rather than hinder it. Anyway, to the OP, I would just do what comes naturally. I don't think there's a right or wrong answer.
I put "speech" in quotes because my son needed help eating for months because of 7 weeks on a ventilator and 4 months on an ng tube, just wanted to clarify for anyone who didn't realize that we weren't trying to get our kiddo to talk from birth He was expected to have severe issues with talking too, so we were being very proactive. The folks who helped our son learn to suck-swallow-breathe were speech therapists.