handling a 7 years old

does any of u struggling on handling 7 years old? my 7 years old boy is out of control i will be constantly reminding him what to do every single day like when he go pee i have to remind him to flush toilet wash his hand and dry his hand i asked him why can’t he do it without me needing to remind him he said he always forget.he also takes 2 hours eating when unsupervised i need to constantly tell him to chew and keep eating especially when it’s veggies. i took his tablet for 2 days now and put his t.v time down to 1hr he has unlimited screen time before so i suspect it was because of that but i seriously need some advice on how i can handle him better how can i make him remember his routine im desperate coz im 35 weeks pregnant and when baby comes i’m afraid i won’t be always around to remind him every single step of every single thing he do every single day. 😭 pls help a mama out.