When you have time, take a look at the text and you'll see "dad "is written with a small letter. Sometimes it's hard to tell which way to write that word, and the same with "mom." But usually if you ask yourself, can I use his or her in front of it, you should write it with a small letter. If you're using it as a name , then you should write it with a capital letter.
が多い。
2) he downs every dose (薬などの1服を)きちんと飲む
You could say a measure, a single measure and the amount of the measurement, of course, depends on what the prescription was. Sometimes "dose" is also used to talk about other things, though. Maybe things that are good for you that you don't really want. So for example, "You could need a dose of discipline." or "You could look at something with a dose of skepticism."
3) immensely 非常に、大いに(形容詞は immense)
"Immensely" is kind of an interesting word here. It means
the word "largely" here. Because "largely" means for the most part. It doesn't mean the 100%.
4) laying the groundwork for ・・・ ・・・のために土台を築く、 基礎作りをしている(建築からでたことば)
"Laying the groundwork" comes from the construction
for the visible part of what's being built. It's very common to use either one of those phrases in this kind of situation.
5) blog ブログ A blog is a kind of diary or journal that's posted on the internet so that anybody can read it. It's short for web log. Web meaning the world wide web, and log meaning journal or list of activities or something like that.
6) oh (イントネーションによってニュアンスが違う) How you say "oh" can make a difference in the meaning. If you slide up very clearly, making it a very strong kind of a question. "Oh" it sounds a little bit like your sort of skeptical about what you just heard. If your intonation is falling, it shows a little more interest, "Oh", you're kind of surprised and pleased.
"jell" in this case, is a verb. When it's a verb, you have to spell it j-e-l-l. It seems to be a backformation from the word "jelly," and that means "jelly" was the first word and the verb was developed from the noun. There is another kind of gel, g-e-l, which is probably short for gelatin and it's a noun that describes that kind of a mass like a hair gel.