i think your fear makes a lot of sense. i get that split too between being totally self deprecatory at times and then getting carried away. except i tend to feel embarassed after both! the who am i question is such a huge one. im so many people at different times. like thinking, moving, acting, feeling totally different its impossible to know who the 'real' me is but recently ive been finding the weirdest thing. its like occasionally these different personalities are beginning to melt into eachother every so often. like the characteristics of one of them will show up in a situation they never usually do. its completely freaking me out but i think its a good thing because i think maybe it means that as i become more in touch with my feelings and begin to understand more where im coming from and how i behave im becoming more authentic. so anyway. long story short. i think its good you managed to show him one of the other sides of your personality because the more you can let all sides come out the closer i believe you re getting to real authenticity and honesty. which is petrifying but therapy is the perfect place to try it out. on the other hand... 7 sessions?!?! thats so short and you re already doing this much work!?!? thats great!!!

i cant say too much about being afraid he wont be able to handle you and will leave because its a major issue i struggle with too. what i try to hold onto is the idea Ts are trained to use their vast arsenal of coping mechanisms for themselves and they tend to be good at self care if they re good Ts so they can handle a lot. besides that i figure theres no point wasting the time i do have with her worrying about when she will leave. its going to happen anyway so i may as well get the most out of it in the meantime. if that means focusing on the less intense stuff and getting as much of that out of the way as possible and then seeing if shes still around thats ok for me. it doesnt seem to me at all like your T is running. it sounds like he knows what hes doing. go easy on yourself with trusting though. you re not expected to trust completely after 7 sessions.
oh and about T doing pushups on the kitchen counter!!!! hehehehe.
take care and as you say... time.