Changing from tablets to implanted Estradiol will give you different delivery rates. The tablets will give you a spike and a rapid fall several times a day if taken sublingual. The oral tablets give a bit more stable blood levels, but never reach the highest peak due to the first pass through the liver, which the sublingual route avoids.
Using an implanted pellet for Estradiol delivery will give you the most consistent blood levels of any delivery system. The blood levels are most important. There are different strength pellets available for your doctor to select the proper strength pellet. The doses from oral to pellets do not translate mg for mg. Your pre-pellet dose and your desired blood levels as well as other factors will help your doctor select the proper strength pellet for you. After your pellet has been in place for a month or so, your blood levels can be measured again and additional pellets inserted if needed.