@coachlittlez23 Someone asked me on WhatsApp what I did with my baby when he was about 3 months old and this was what I said…
Lots of tummy time: have a play mat where I put him down and use different toys for making it interesting like a water pad, rattle ball, cloth books, picture book. Also alternate between fully flat in the mat or using a pillow under his arms.
Read him a book: the important thing here is that he hears your voice, even if he can’t properly see the pictures. Ideally, books with colourful pictures, but it doesn’t have to be a kid book, your voice is what matters.
Sing songs to him: play him kid songs for super fun time or “adult songs” that I can dance to (to him and with him).
Baby exercises and massage: lots of stretching of arms and legs, describing his body parts. Massage his hands and feet, and belly for good development.
Exercises for my self: you can do squats and twists and abs by using baby as a weight and they enjoy the lifting and movement.
I also do short “solo play” time where I put him in the play mat with some of his toys and let him enjoy the time by himself while I’m sitting nearby. This helps them be independent and discover the world on their own.
… all of the above obviously when I’m not cooking or doing laundry or other tasks around the house. During those I’m either baby wearing and talking to him, or he’s sitting in his bouncer watching me, perhaps with some music