After your pre-settled status application was successful, you can spend up to 2 years in a row outside the UK without losing your pre-settled status. You will however need to maintain your continuous residence if you want to qualify for settled status.
work in the UK
use the NHS
enrol in education or continue studying
access public funds such as benefits and pensions, if you’re eligible for them
travel in and out of the UK
With regards to children, any child born in the UK after you’ve obtained Pre-Settled Status will be automatically eligible for Pre-Settled Status. They will only be a British citizen if they qualify for it through their other parent.
You may notice that one of the key differences between having EU Settled Status and Pre-Settled Status is the eligibility for British citizenship.