Hej, congratulations. well, i bought meyer lemon a week ago also and i am not expert but i can share what i read so far about Meyer lemon is that keep it in sunny place for atleast 6 hrs a day. do not let the bottom of pot dry, it should be good moisture level and the top can be bit dry. so, always check moisture level in pot before watering. If you just bought the plant then probably it would have been in small pot you can switch to relative bigger pot without removing old soil. because it is not right time to reduce or remove old soil completely if your tree is holding fruit and flowers and if you want to have them. And search for suitable fertilizer , because citrus plants need furtilizers. keep in touch with this forum coz I found this forum really helpful and there are really nice people and expert with really nice ideas.