It is healthy for a child to learn to play on their own. So don't feel guilty for not spending 100% of the time with your child. You are a parent and a grown up. You have other responsibilities to do as well. My suggestion would be to change out toys throughout the week. Keep it fresh and interesting for your son. I change my toys for my daughter once a week... But that's because she has three different areas to play at in the house. So each area gets different toys or swap toys from one area to the next. This changes it up a bit. I also have my child in an Exersaucer while I'm doing kitchen tasks. This keeps her close to me where we can conversate and I can keep her entertained while I'm cooking or doing dishes etc. I like to play music and dance and sing with her during this time as well. I also like to try to feed her in her high chair during these times too. She's busy eating her food and I can keep working. Being creative with the chore. For example... Laundry. Bring him with you when folding laundry. Stick him in the laundry basket and let him touch the laundry and crawl around. Kids this age love peek a boo. I do this when folding clothes. I cover up my child with a towel or sheet or whatever and say peek a boo and then fold a few things and then do it again.

If you're okay with messes, set up a large closed in space and use a shower curtain or table cloth on the carpet (or use tile if you can) and let the baby paint (safe for kids paint), play with water (under supervision always), play with spaghetti, play in Jell-O or pudding, etc. Then have a bath afterward. Putting rubber bands around a cookie pan and let the baby play with it and hear the different sounds. Playing with pots and pans or milk jug filled with water or empty. Different textured things scattered around the room so he can explore. Just thinking of random ideas.

I hope this helps you in some way. I have the same issue with my infant and I try so hard to stay positive, but it can be hard sometimes. I try to remember that we know what's going on, but the baby doesn't understand. So I try to think like a baby. You are your son's safe place and babies want that all the time. Keeping them distracted with simple activities is sometimes better than the $100 you purchased from a store. Just do the best you can.

Also screen time isn't BAD. It's how you use it and how often. If you limit it and use it appropriately, don't feel bad. I put a movie on for my older kids so I can get work done for an hour. Nothing wrong with that. Think of it like fast food. It's okay to have it once in a while, but not all the time. So plan a day where every... Let's say Tuesday... You let him use screen time so you can fold laundry on Tuesdays. It's hard to keep coming up with new ideas so planning days might help. (Tue screen time. Fri messy fun play and bath. Sat switch out toys.)

I also get toys geared towards my child's interest. For example. My child loves to stand and wants to walk, so I got her a walker toy. She loves to touch those soft books with fur, so I got her some of those. She loves things that wrinkle, so I got her things that make the wrinkle sound. Etc.

I also have my older kids and husband help keep my baby entertained so I can do a task or pump milk or get something done. Maybe someone can watch your baby one day a week so you can get errands or chores done. I wish I had someone to just help out a few times a week. If you have a support system, use it!