Trust me, I only got my first BP on the 5th October and I have learnt so much about them in a short space of time. We are here when you have questions and trust me, I use this forum any time I need help and adviceMy bumblebee was only 77g when I got him and I think he is the same age as my albino so your BP's weight is nothing to worry about!
I concur with trying to get onto rats if you can, they have a higher fat percentage and it can be easier to feed one item rather than multiple when they ageyou have time to switch: example; My bumblebee had been eating rat pinks, I fed him a small mouse on his first feed due to a defrost disaster and then on his second feed with me he was back onto rats with no problem whatsoever.
You will get used to your new BP very soon and anything you don't understand, ask. We all start out as newbies (I'm still very much a newbie!) and we all have to learn.
Your BP looks healthy and is a gorgeous BP!
I feed mine at that weight every 5 days, sometimes roaming around can be a sign of hunger but mine don't tend to roam on a 5 day schedule apart from at night in between feeds which is normal.