My 6 month old boy Hades is having his first shed since being with me, I've had other snakes before but this is my first bp. I keep his tank floor on hot side 85, with a basking spot of 90-92 and the cool side 78-80 (i have a zoomed thermostat so it stays around this), he has a top opening lid which i know is not ideal but i keep damp cloths on top to keep the humidity around 60% pre much all the time, i live in Canada and in a basement so its kinda cold, in order to keep his temps there i use a 50 w infared bulb, i know this dries things out but i mist him daily and change the cloths daily, when i saw him start to go blue, i filled his warm hide with moss so it was 80% humidity in there.
(i figured knowing all of this would help lol)
His whole body is shed except his head and a little down his back, i gave him a bath when i saw him clear up as i've read that helps too, it mostly came off in pieces and i bathed him again today for his head and back but it seems really stuck, whats the best way I can help him ?
He also eats like a champ but hasn't pooped in like 3 weeks, and the baths don't seem to be helping ?

Any input would be greatly appreciated, thank you !