Mom guilt…

We are expecting our second baby in 9 weeks and my son is only 19 month currently. We are very excited to have two babies and yes the second was planned. We always wanted a smaller age gap and we were lucky enough to get it. Lately I’ve been getting hit with a ton of mom guilt regarding having another baby. I feel like my son is so small he won’t understand why they changes are happening and I don’t want to lose any time with him. I know this might sound crazy and it’s probably hormones but how did everyone deal with having two under two? I’m the first one in my friend group to have two babies so I don’t really have anyone to talk to about this.