I have a 6 month old and he loves his baby food. When I took him to his 6 month well baby appointment I talked to the doctor because I was concerned that he was not getting enough breast milk because he wanted baby food. Here is his schedule:
7am he wakes up and nurses.
9am cereal (sometimes with a fruit, depending on if he is still hungry)
11-12 nurse with a fruit or veg (sometimes both if he is still hungry, we have just started giving him solids at this time, so some days he only nurses, it just depends on his mood)
3-4pm nurse (somedays he does not want to nurse at this time)
5:30-6pm fruit and veg (he refuses to nurse at this time and will only take baby food, sometimes he has 3 size 2 baby foods)
7:30-8pm nurse then bed afterwards
Most nights he sleeps through the night, but occasionaly I will have to nurse him once in the middle of the night.
I do family childcare, so I am lucky that I am with my son all day long, so I can adjust how much he eats based on his hunger.
When I told the doctor he was only nursing 3-5 times a day he said that it was fine. He told me by 9 months he wants at least half of his calories to come from solids. He also said that babies are smart and will stop eating when they are full, so to give him as many solids as he wants and he will stop eating when he is full. Unlike adults where we tend to eat until our plate his empty. I also do not pump and only nurse him so I have no idea how many ounces he gets at a time. He also said that I can start adding in mashed table food into his diet.
My daughter was completely different when it came to solids. She loved to nurse and very slowly added solids to her diet. I pumped during the day for her, so she had bottles at daycare and I nursed her whenever I was with her. Around 8 1/2-9 months her daycare started introducing table foods to her at lunch. They normally started at 8 months. She was a late teether, so I was concerned with her lack of teeth but she did great. I stoped nursing her at 12 months and that is my plan with my son.
When my daughter was younger I worked at a child development center and saw that each parent normally has their own opinion on what their child should be eating. If your son is happy and growing fine I would stick with what works best for him. If you get a note from your sons doctor, your daycare provider will be able to keep it in her records and should not have any problems with feeding him what you and the doctor feel is best for your son. If she still has an issue with what to feed your son, she may not be the best person to keep your son for you.
I hope this helps.