dani, kids are so forgiving. He loves you as his mom, and nothing can change that. If If he is in school, he probably needs to de-stress from school by having some alone time. You can always be a listener. That doesn't take much energy, and makes all the difference to a child who wants your attention. Read him a book once a day...that doesn't take a lot of energy.

Good mothering doesn't mean running kids to activity after activity. Being an only child, he may benefit more from alone time with you, just being in the same room quietly playing by himself. And there is nothing wrong with watching a movie together.

Just being together is enough.