Worrying about eating healthy-ish + first clogged nip

Does anyone ever worry about eating enough healthy foods to ensure that your milk supply is feeding baby the nutrients they need? I try my best to eat enough protein everyday but then as the day goes by so fast, often times I can’t seem to eat enough healthy options (like enough veggies, even if it’s available) because in the moment I’m going for what is the quickest item I can eat that will fill my stomach before baby screams lol. I don’t snack as much and if I do I snack on high fiber cereal or fruit bars.

Also I noticed yesterday my right nipple is clogged. I’ve been using my heating pad before pumping and ordered sunflower lecithin to help unclog but any other tips? I don’t want it to get worse and luckily I don’t feel any warmth or tenderness or pain or have fever etc.