You can easily change who gets money from your bank accounts, life insurance, and investment accounts by designating the beneficiaries. Your trust can be a beneficiary of any of these. If you designate your daughter by name as a beneficiary, she can inherit as young as age 18 (depending on state law). So you may choose to have your trust be the beneficiary. My trust was written when my daughter was 2. I followed the lawyer's recommendation that until she was 30 the trustee had discretion in giving her money. Once she was 30 she would get 1/3 of the remaining trust, 2/3 at 35 and all at 40. I also had specific sums of money to go to some other individuals, and the remainder to charities.
You will need to think about who should be the potential trustees. My main trustee designation is still good, but I really should change the backup as she moved away and we are no longer close. (Should anything happen to the main trustee I will certainly do so.) In my case I also wrote in provisions for the trustee (who would also have been the guardian) to be able to use the money for housing, etc, as my first choice had agreed to move to my city if needed.
My daughter is an adult now but I have been delighted over the years that the advice the attorney had in how to word both my will and trust made them still valid for over 20 years. I recently introduced her to a fee only financial planner (that is great) who will guide her as needed when she does inherit.
I thought my attorney was especially helpful in reminding me that one does not know how a child will be with money in his or her 20s, or even older. This experienced attorney was well aware of beneficiaries in their 20s having substance abuse issues or or being sought after for marriage because of their wealth. The latter had not occurred to me.
At the time of getting a will and trust I was in a long term relationship, but not married, and the lawyer advised me to use beneficiary designations for the money I wanted to go to that person, as they could be easily changed in minutes without any lawyer fees for changing a will or trust. You can do that for any bequests that you think might change in a few years.
In short, the price at the time ($1800 for trust, will, and healthcare directives) seemed like a lot but it was worth every penny to go to someone highly recommended as a specialist in trust and estate law.