Liner pics after a month of burning - time to clean or is this normal build up

This being our first year wood burning I just want to be cautious as some of our wood is in the 25% range. The snow melted off the roof so I climbed up to take a peak. We have been burning almost every night and 24-7 on the weekends since mid October. Is this an acceptable level of creosote after that amount of time? It is flaky and comes off easy the couple bare spots in the pics I brushed with my finger.

My burning habits have improved the last few weeks so I'll probably brush it and keep checking every month or so. Having never seen a liner after burning I wasn't sure if this was good or not! Thanks for the input

Guess I must have learned a thing or 2 from this site! Thanks for the feedback I'm sitting here watching the secondaries rip in shorts and a tshirt and it's 18 outside I love wood heat!