mommy mental breakdown

so this is really the first time i feel like i’m coming close to a breakdown. my son will be 9 months on friday. my boyfriend works out of town during the week so all the parenting and household responsibilities are up to me as i’m a SAHM. i love being a SAHM bc i never miss any big milestones but lately my son is really driving me crazy. idk what’s going on w him or if this is normal but he has been off the walls lately. the past 2 or 3 weeks he is crawling all over the place, grabbing everything he can, standing up on things, getting into things, whining constantly, refusing naps and bedtime (not just fussy i mean like blood curdling screams) to a point it makes me want to just bawl my eyes out. idk if 8 months is where it usually gets hard for most parents or what but oh my gosh… people that have multiple young kids you are the patient GODS.