I'm still new at this parenting thing and I could use some advice on how to handle the advice that everyone is more than willing to give me. I don't know how to politly tell people (when I say people I mean his dad's mother) that she raised her children and I make the decisions about Kaleb. Normally I would just say back off, but the relationship is very delicate and new and I don't want to offend her because I want Kaleb to have his grandparents in his life. Any advice?

First off, being new can mean being closed to some of the good advice too...so make sure that you don't stop listening to the plethora of advice...but learn to FILTER it. It's called a Crap Filter in my book.

You have to have a conversation with her, it won't be fun. Don't tell her to back off, you are right not to do that. I would suggest telling her that unsolicited advice isn't really wanted, that you appreciate all that she did with her children, but that some things are going to have to be yours to learn on your own. Let her know that when you are lost and looking for guidance..she'll be on your list of people to call. Tell her that you do need advice on some things...but that she's overwhelming you right now.

I guess its a "stroke Grandma's ego" while keeping your sanity play.

Kaleb's mom,
Unless she gets down right ugly about anything (it does not sound that way so far) I would just smile and say, "That is very interesting. I will take that idea into consideration" or something to that effect. You will fall into what is right for you and your child.

I have raised my daughter a bit different than my mother raised me but with the same values. Mom (no mother-in-law) had some ideas and thoughts that were better than any book or doctor could have given me. One example: "they" say not to let your baby sleep on their stomach. A wedge or their back is better. Well Evie would not ever sleep on her back (even to this day ... she is 12) and a wedge did not work either. She slept up on her stomach on a big VERY firm pillow that my mother made for her. There are many things that "they" are saying these days and many items that are "must haves" for new moms ... well most of these things are unnecessary ... look how we turned out. One item I totally agree with that "they" say is a must .. a car seat. Not putting your child in a car seat or seat belt is to me .. child abuse.

Take what she says with a grain of salt but, smile, listen, do what you think is best, and one day she may have a great idea for you.

That is actually what I'm trying to do- listen and then do it my way anyway. I'm lucky that his dad is on my side when it comes to stuff like that. I think what bothers me the most is she questions things that his doctor told me to do and I figure after 8+ years of medical school his doctor probably knows what he is talking about.

Just remember that a Dr. may also tell you not to start foods too early, but both of my kids had to be on cereal earlier to sleep through the night. It's all about what works and is best for both of you. Don't just dismiss everything, but ultimately...you are lucky to have someone who wants to be there for you.

They all have good points. My Mom-in-law and I are actually pretty close and she tells me things all the time. I say "okay thank you for the imput" and move on. Sometimes I ask how or why she came to the view. It helps her feel needed and I might learn something.
Doctors are not always right either, after all they are human.
Blindsky made a comment about foods. This is up to you. I never gave my kids baby food. I gave them small pieces of table food when they could put it into their mouth and gum it.
Use your common sence, take it all in, then make a decision that works for you and your son.