HELP! One pipped-I'm in lock down & having trouble stablizing humidity

Hi folks...

Went into lock down yesterday at 12:20 p.m. Took forever to raise the humidity and also get the temp to stay higher as well. I can't open the bator (home made) to adjust the temp but can add water to bring up the humidity. The temp was perfect before lock down though. I have three thermometers...one says 99.7, one says 98.9 and the meat thermometer says about 99...and I'm not sure which one is right. My humidity is ranging between 66-74. Is that too much fluctuation or am I ok? I've got one egg that pipped this morning at about 8:45 but it isn't doing anything more...I'm worried that it should be doing something by now...it's been 6+ hours. Will they pip and sit this long before beginning to zip? Thanks anyone for your help