Highly recommend you look for this on Google using the term "executive function" or executive functioning. I think you will find what you are looking for using these terms. Most autistic children have some form of executive function problems. Organizational skills are one of the issues. Thought I would mention it.

Such a difficult skill even for NT kids . My daughters school does not have lockers so she always has her books and notebooks in her backpack. This has helped with forgetting to bring home work. Having and keeping a set of text books at home can help. My daughter used an agenda. She needed to copy her homework from the board and have her teacher check to make sure she copied it all down and then the teacher would initial the list. She did not have an IEP but a 504. Some teachers are better at following through with the plan. I used an accordion pleated plastic filing system and had a section for each class. I used different color folders for each subject. I had my daughter fill out the labels and choose which color went with each subject. It helped her remember. I would also go through her work and agenda and we would write all due dates and highlight them. It is labor intensive and time consuming but she is in 7th grade now and we started this in 5th grade. 5th grade seems to be when the course load becomes overwhelming. I still help her set up the system and tweak it but she is now able to keep track of most of her work. I still help her sort and clean out her folders. She has a hard time throwing out old work. It is also important that they put dates on their work. That took about 2 years to sink in. 😅. It's routine and consistency that will eventually stick. The more stressed they are the less organized. My daughter can still lose an assignment and I check one folder and find it. It is difficult but pays off eventually. Good luck !

This is what I am working on now w/my son. He's in 7th grade. He has an IEP but I know little about how they really work. I brought it up at last year's IEP & the school blew it off - because I was unaware & not adamant about it.
I was informed recently there is a group NV PEP - Nevada Parents Empowering Parents. They have a website w/webinars & classes. They sent me a bunch of info about accommodations on the IEP to help w/his organization.
At home it's a lot of work too, I go through his paperwork with him everyday. It's a work in progress.
Thank you for the comments & sharing.

I have his teacher email each day with homework details tk behavior etc. Not saying they do it everyday according to IEP however they are supposed to.