when is the best time to start handeling my tarantula and feeding it again . my g.rosea molted last night and is around 2 3/4 " not being accurate .
Also her abdomen is quite small will it expand back to normal size/ bigger?
Yes the abdomen will expand again. I would suggest waiting a minimum of one week before feeding it or handling it. 1.5-2 weeks would be optimal in my opinion. Just make sure it has access to fresh water and you're golden.
A good indication that I go by is to find out what color the fangs are. As they harden, they turn black so try feeding it when the fang are very dark and not before. Any other color than black means it's not hard enough to eat and too fragile to handle.