Feeling the guilt

My first baby is now nine. We just had our second baby a few days ago and I feel the guilt. Hard. I know he doesn’t need me every second, I know he can do so much on his own. I think it’s the fact that he’s had me all to himself his whole life. We’re all so happy to finally have another little guy but my heart is so broken for my first at the same time 😔 he hasn’t said anything, I just wonder if he thinks anything similar.