its been a while since I've had tarantulas but I when I had them I would just get them good and fat and then not feed until a few days after the next shed. with a pink toe you should probably do just one or two crickets a week for a few weeks then skip one or two. at that size they should molt around once a month.
I always feed our tarantulas a small meal about once a week (for a 3-4 inch tarantula usually about 1 or 2 crickets), which keeps them plump and active. If they seem skinny I will feed a little more.
It depends on feeding and temps. Why are you trying to make it grow faster? Generally that isn't good for them particularly if your T is a male, you are going to make it mature faster.
Generally you should feed once a week, 1 to 2 correctly sized prey items.