Heh... I've done nothing today but break down a few tunes and learn them.
Ok, I've done all the cooking and fed my wife while she works on homework... a few loads of laundry... the dishes... cleaned the cat box... but other than that just flute playing, tracking down recordings and listening.
I'm very new to ITM. Just over two years now but I practice everyday without fail unless I'm sick. I keep a flute and whistle with me always.
You are most likely struggling to play the instrument itself and learn the music at the same time.
This makes your task exponentially more difficult.
It will take some time. Don't rush it and do not dispair. It will come. Enjoy yourself.
I do use sheet music often but only as a very basic guide. I can read and write it so its a useful tool.
The brain connected to the ear connected to the fingers is a better one though.
The brain/ear/finger is muscle. It needs training.
I find I better retain it if I breakdown the tune by ear and write out the notation myself in ABC the use a converter for staff notation. Makes a keen PDF and midi too.
http://www.concertina.net/tunes_convert.html
Everyone has different settings for same tune. Its unlikely you'll find the exact notation for what you are hearing in session online or in a book.
I record the sessions I attend and try to ask the names of the tunes that catch my fancy when ever possible and speak the name into the recorder.
If I have a name I can remember it better and I have it recorded so can listen to it over and over.
It seems we all get the "wrong off ramp" condition at some point. It happens much less now. Why?
Because I have started to internalize many of them not just memorize them.
You hear a few notes and boom... your fingers are off on their own.
That only comes from playing them over and over and over. Then trying different variations over and over and over.
You asked about what you think about to keep on track.
I try not to think. I take a Zen approach. Literally.
Thinking about what I'm playing will screw me up faster than anything.
It takes too long to think and it stops the flow.
By the time you do the moment has passed.
Listening to what I am playing... now that is important.
Once you've got a tune on automatic then you can pay attention to yourself and perhaps more importantly... everyone else.
Keep it up... you'll get there.