Breastfeeding Anxiety

Victoria 👻 • Married to the man of my dreams and waiting for our baby boy to arrive on 5 March, our 2nd!!!:)
I'm a FTM, I would like to breastfeed so I'm trying to wrap my head around it but it seems impossible. Please help me!
I understand that newborns need to be fed every 2-3hrs and that one needs to pump after each feeding to stimulate milk production. Am I right to assume that if I breastfeed every 2.5hrs (to simplify the calculation) it would take:
- 15min per each boob to feed = 30min
- 15min to burp
- 15min to pump each breast = 30min
- 15min to wash pump, change diaper, swaddle etc
That equates to a min of 1h30min and only leaves me with an hour before the cycle starts all over again? And I should expect to do this around the clock for at least 3 months and I will probably spend much of that "free time" soothing the baby? When will I sleep?