Free iCloud storage
I have a 8 yr old son that is severely autistic and is completely non verbal. He uses his iPad to communicate with me through my iPhone! His iPad had almost 50 gigs of apps and pictures and programs used for therapy and school. I am looking to backup his iPad apps I have on my phone for him so they are not lost, he has a iPad one originally but it was broken and I lose everything once,I have spent a lot of money on purchasing these apps back on a iPad his therapists gave him. I need to back everything up! I'm on such a fixed budget being a single mother is there a way to get any more free storage for iCloud because I just can't afford to pay anything more per month! His iPad was given to him through his 3 therapy places. I have all the apps on my iPhone and I need them backed up so they are not lost. Please someone give me some helpful advice.
iPhone 7 Plus, iOS 10.3.2