Yes, all the sex scenes can be avoided.
Unfortunately, I have no good news for you yet: with the current chapter division I have planned, the first lesbian sex scene will only be in chapter 5, and there may be a lesbian kiss in chapter 4.
However, the chapter division is preliminary, and I may decide to increase the chapter size, which could result in the lesbian scene being included in chapter 4.
I hope I haven't upset you too much.
But please understand that the storyline is written to be more realistic. Michelle is a girl who grew up in a relatively conservative family.
However, as the level of lust increases, she will become bolder.