I too pumped a lot with my first. I used bottles of my milk when out. I then used as you did, my frozen milk in her cereal when i started her on cereal. But after having my son, I never pumped, I don't think even once. I did not start him on cereal like my daughter, I started him on fruits, and at almmost 5 months old and at 6 months old was giving him some table fruit like bananas, pears, peaches, things that were soft, and by about 9 months he was eating everything we were. It was amazing since with my daughter I followed the traditional cereal first, then veggies and then fruit but only baby food, puffs and things like that and she never took to eating, it was not until after her 2nd birthday that began eating solids. I bf her till she was 4 since she just didn't eat enough. I thought my son was going to wean before her, but I finally had to forcefully wean her cause I think she never would have stopped. she is a super picky eater, and hates to try new things, and my son loves to try new things and is 3 now and eats anything. I truly believe their preferences are due to how I fed them as infants. My daughter did not get as much exposure because I introduced things slowly and sh has tons of allergies, and my son has no allergies at all to food or anything, and loves to try new things. The allergist also recommended that food protocol for my son to try to eliminate him getting allergies like my daughter and it worked. Now my daughter is beginning to try a few things only because me and my son eat them, but she is almost 6 and still won't eat the food, usually it is a success if I can get her lick something. Anyway, the point of all that is that I don't think you need to pump at all, and you don't have to start with cereal, my son never had baby cereal, and I have to say he is healthy eater, unlike my daughter.