Can you mix some things with milk maybe
My baby is doing the same. For us, I think it's developmental changes with all the new milestones. She's so focused on crawling and babbling and exploring that food (including nursing) is not as interesting. I just keep offering like usual and I'm sure that she will go back to eating more in no time.
I could have written this post myself! I find that dipping whatever she’s not that interested in in yoghurt helps because she loves yoghurt.
Following this because I’m in a similar boat