A way to skip the wait after you initially feed it is to sleep in a sleeping bag (mine was 1 hour and 14 min, i used a bunk bed and it skipped most of that time), then after that feed it a second time, position yourself between its 2 front legs while it is doing its eating animation, so that it will keep attacking but won't knock you back, and just afk and feed it every 25-45 seconds.

also be sure to do this in a safe place, since if it gets hit once your taming progress will reset.