At 6mo solids are really for taste not calories as they are less nutrient dense than breast milk or formula, so it's actually better to give milk first and top up with solids until about 1 year old.
A night feed is also very normal at 6mo and it maybe because of the 3 meals of solids that it's still needed, ( solids make them want more fluid) also many 6mo are still on 1 or 2 solid meals as it isn't as filling as milk.
A rule of thumb I got told was if a 6 Mo goes 6 hours and wakes up feed them... 8mo 8 hours... So by 6 months you can reasonably expect most (but not all) to go 6 hours, but to go 12 is luck more than normal... So 2.30am is reasonable. And at 6mo 5 feeds is normal.
In terms of her day naps, they don't impact waking more the length of night sleep and total sleep in 24 hours rather than how it's broken up..