I have two children of my own and I always said you could not spoil them by holding them too much.
I now keep a little boy that makes me say YES YOU CAN! He was 8 months when I started keeping him, for 7 months a spanish lady kept him and literlly held him all day long, asleep, awake, eating it didn't matter. Mom finally realized what was going on and could not do anything at home with him - except hold him. She decided he needed a new caregiver - and I got the job (unknowingly of his needs). He screams and cries if he is not being held. Playing on the floor with him is not good enough - must be held! Won't swing, won't sit in high chair, won't lay down for a nap! He will turn a year old next week, I feel I am not making any progress! I feel sad for him as it is not his fault, he knows no difference.
This being said, hold, cuddly, kiss as much as you want, just make sure there is a balance of floor time, swing time, etc. for your baby's sake.