If you tolerated your first prescription well enough, ask them to add a strain selector to your online portal so from month 3 onwards you'll have some choice/flexibility in strains.
If you have a particular strain in mind you'd like to try for month 2, just let them know what it is. Try to show them you've done your research and have a clinical reason for thinking it'll work for you.
Other than that, just try to write down some notes of what you want to tell them about your first month including:
1) What did it do for your symptoms/what didn't it do you'd like
2) Did you have any adverse events
3) Are there any reasons you did not like the strains you had (taste/smell/etc)
4) Calculate your usage over the month to help inform them of whether your prescription is the appropriate size and appropriate balance of day/night strains