Nearly 6 month old seems off her milk?

Its half 1 she last had a little feed say around 10:45 but she didn't have a full feed. Then she last fed i feel like early morning.

I havent recorded her feeds today but I am going to from now when she feeds.

She had a sleep i thought her soft spot was sunken in but its not now despite not eating

Any advice?

Were not weaningnywt maybe in about 2 weeks when she is 6months

She seems fissy and irritated at the boob and then won't feed until she needs a nap and feeds and falls asleep