You never forget, it’s bloody exhausting/traumatising in many ways.
OP with the kindest respect, whenever you want a baby you have euphoria and boundless enthusiasm for the topic. Unless you have experience living in the same house as a baby or regularly helping out overnight (siblings, niece/nephew, friends child) then there is no possible way that you could - no matter how many anecdotes - conceive of how much hard work a baby actually is.
Reproduction is a funny thing; when you are settled down you lie to yourself, you think how wonderful and different and perfect your child will be. You become preoccupied researching prams with the best suspension and rear facing car seats.
In short the realisation that you will never again get to sleep heavily or binge watch Netflix does not set in until you are a parent. Henceforth, your house ceases to be a show home, and your social life and career can end up sidelined as you have to prioritise the child’s needs which vary from child to child - some require more of you than others.
The good thing is that children are very rewarding too and there are many wonderful things to enjoy too. It’s just that right now you have a young baby and I’m presuming are still off on maternity?
Get childcare lined up for when you go back to work, maybe even start it a bit early to give yourself some time to recoup, and meantime reach out to your friends and family to all the mothers you know. They will understand, they will help and they may give you lots of unsolicited advice but let that wash over you. Their experiences won’t have been identical but you will get some support somewhere, just ask.