My mother is 90 and does not want to get out of bed. Does not seem depressed when we talk and is still eating and drinking. Is this ok?

My mother has lived with me for the past 8 years and had quite the routine of knitting, reading, and word search games, along with wine in the evening and small meals I prepared for her. She turned 90 recently and this month she does not want to get out of bed. Says she is tired. She does not want her wine or coffee, but will eat some very bland things and drink ginger ale. Should I be making her get up? When I ask her if she would like to get up to talk or see the Christmas tree, she says "maybe tomorrow". What else should I be doing or do I just leave her be? Are these end of life issues? Thank you.