Hi Mendoza, welcome to the forum.
So although I certainly don't consider myself an expert

I am learning along with my son. I practice 4/5 times a week. Sometimes evyday and then life gets busy and I miss a week. I am making sound progress and am having lots of fun along the way. You really should consider having a go at it yourself. I am sure you will enjoy it and it is great for your child to see you playing.
So for your boy, to get good results and gradual ( but not predictable

) progress, the best thing to do is to practice every day. How long is less important than the daily practice. For 2.5 year old a session will probably last just 5 minutes ( possibly less :lol: ) at the beginning. If you could manage 2 short sessions daily you will see amazing results! Much faster results than paying for traditional piano lessons once a week. You will find that before long your child's focus will improve and your lessons will stretch out to 15 mins or more.
It is better to have a dedicated computer for the piano but we don't and we manage fine. We have a laptop plugged into the piano. I unplug it sometimes when I need more than the iPad, but mostly I just do my computer work at the piano now! :ohmy: It is very important that you have the piano somewhere central to family life and low enough for baby. We have moved ours 3 times since we started and I am still not 100% happy with the location! :whistle: I would say just start with what you have and you will figure out quickly whether you need to locate another old computer or table or...house! :lol: