Daily 'off' period

Good morning everyone,

I was wondering if the are more fellow sufferers that have a daily 'off' period at around 5 pm. I take 3 x 62.5 mg Sinemet but its seems not not covering a little part of the day. Maybe its a reaction of a days work or maybe i need more medication in the afternoon? I switch back on as soon as i take my evening dose.

Anyone recognising this?