Abandoning toddler

I have a 3 year old son and a newborn baby.. I’ve been having to send my son to stay with my parents A LOT lately due to lots of health issues after my pregnancy and had a c section 10 days ago. He wants his mommy so bad right now but I’m just in bad health so I’m very limited to what I can do with him at the moment and he’s having to stay with my parents. I miss my little man SOOOO much I feel like he thinks I’m abandoning him and it’s breaking my heart 😭😭😭😭