marriage and sex

I have a question and I don't feel comfortable asking friends but my husband and I have been together for 11 years married for 4 years. we also have one 2 year old, I'm not sure if the amount of sex we have satisfies him, he says it does but I dont know if it is not enough. we have sex 2 times a week and I will give him a blow job once or twice a week besides sex. is this normal amount for a healthy marriage? thank you for any advice 😊