Is it I must have a balanced diet or what I eat have to be full nutrition if I'm breastfeeding? Is it what I ate will be fully passed to breastmilk? I keep my diet well like eat more fish and no snacks no any spicy no any gassy food until LO 6-7months. Now I start to back to normal diet. Doest it mean that my breastmilk will lack of nutrition now?

Kudos to u for keeping it diet so in check for so long. The food u take will affect the taste of ur bm but not so much about the nutrients that u consider it lack of nutrients because the bm receive the best parts of ur diet - and u are left with whatever that is left of it. So a balance, varied diet would be best in the long run - so that baby can taste food thru u on top of what u might be feeding him. But of course stay away from alcohol for the first year.