What does your routine look like now?
It's normal that as her A times and nap times change, you have to figure out how to juggle all her milk feeds and meals. That's ok, you just have to find what works for you and her.
Remember that milk feeds are still more important, so focus on those. Solids can be more flexible.
If she is not eating exactly every 4hrs that is fine. Again, it really depends on what works for your situation.