i there - It can be really tough to stick to an EASY scehdule in the first few months - so well done you!
We had a similar experience with Mads when she was that age - she would be fussy in the evenings at about 6pm and obviously need a nap, but sometimes she just wouldn't take it - so I ended up moving her bedtime back to coincide with that restless time and bathing her and getting her ready for bed, so that she would go down at 6pm. It worked a treat for us and once we had implemented a dreamfeed at about /10ish to replace the lost feed that she would have had later in the evening - she seemed alot happier - and it meant that me and DH had some time together in the evenings again, which was good!
I hope that helps!
Dee
x