TTC again

My Husband and I are trying TTC again. Our daughter is 4 months we want them close together but I'm not for sure if we should fall through with them being back to back. My Husband is all for it but I'm a little iffy because I don't want my daughter to think we are trying to replace her or something 😩😩I'm a SAHM my Husband works two jobs one with the city and another for a hog farm financial well being isn't the problem. Any other mommas have kids back to back? (Age wise , one or 2 years apart) what's your experience or thoughts? (I'm open minded)