I'm only going from google translate, but I think that what you want is 'get used to'. 'I'm still getting used to my new glasses'. 'You need to get used to your new boots before you go for a long hike'.

La estructura para el verbo "acostumbrarse" se realiza de la siguiente manera: to get used to + Verbo ing. Ejemplo: -Me acostumbro a vivir acá = I get used to living here. - Usted se acostumbró a comer pan. = You got used to eating bread. Ahora ahí otra estructura para otro verbo: "Estar acostumbrado" o "solía". Eso se así así: To be + used to + verbo ing. Ejemplo: Estoy acostumbrado a vivir acá. = I am used to living here. Usted estaba acostumbrada a comer pan = You were used to eating bread.

accustom oneself to; get used to; season, acclimatize

I don't exactly how to explain it, but here's the structure: Subject + get used to + verb ing = Subject + got used to + verb ing Subject + verb to be + get used to + verb ing