Withdrawal help

I tapered off 40mg of citalopram to 20mg over 1 week at the start of June and then stopped completely and started taking Vortioxetine 5mg. I went up to 10mg at the end of July, got horrendous side effects so asked to drop down again. So dropped straight back to 5mg, and got horrendous withdrawal symptoms for 5 weeks, I started to feel slightly better so did another drop suggested by my gp to 5mg/2.5mg alternate days. I got bad symptoms again, so decided after reading some forums to see if doing a more steady dose would help, so I started to crush my tablets and mix with a set amount of water and use a syringe to draw up the 3.75mg. However 2.5 weeks on I’m still feeling bad withdrawal symptoms, some have improved a bit but overall still feeling bad. Has anyone done their own liquid suspensions with success or am I making things worse by not getting an accurate dose? Also I’ve been off the 5mg dose for 4.5 weeks but I’m wondering if just going back up would stop the symptoms or has it been too long and I will make things worse by going back up? Feeling very stuck and scared.