Getting tickled by my bf?

So, he knows I have this fetish and he knows I want to enact it. Sometimes, he manages to tickle me just randomly and sometimes while we are messing around he does it too hard. How do I explain or how do I find a 'go to' for someone who is interested in being a ler and how to do it but not too hard, usually doing it hard doesn't make me giggle or anything but whine.

like how to tickle a waist line or how to do a ribcage or something like a 'this is how you do this' lol.

I think its a common thing for first timers to tickle too hard. You can tell him to read this:
https://www.literotica.com/s/the-ler-guide

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