You need to do the opposite of how my mother and my MIL raised their children basically!
Do ensure your male partner (if you have one) models equality of household chores and caring.
Do expect your son to grow up knowing how to make his own breakfast, make cups of tea, cooking, sort own laundry, do cleaning chores etc etc introduced as soon as possible at age appropriate levels.
Don't do everything for your son and do allow him to make small failures
From babyhood do acknowledge and accept their feelings, and mirror these back to them eg "you feel upset / frightened etc because... it's okay to feel that way", and have the father do the same.
Obviously do check your own internalised sexism / misogyny / patriarchy in terms of your expectations and language. Eg be mindful of gendered toys, coloured clothes, decor, stationary etc and gendered language, eg 'boisterous, feisty etc'. Do encourage critical thinking of all of the above within your child when choosing toys, reading books or watching movies.
Do consider using a marker pen to change pronouns in fiction books being read to the baby / toddler. Eg make heroes and villains become female. Make some Cinderella types become male. I recently read an article about this and it's pretty transformative in shaping their opinions of gender roles.