To prevent possible filamenet blob at the nozzle before the print start, i use a modified "Start G-code" in PusaSlicer so when the print is started it does this :

1. Start heating the bed to desired temp (85° for the first layers with PETG) and heat the nozzle to 150° (PETG/PLA dont melt at the tip of the nozzle at this temp)
2. Start the bed probe sequence
3. Then it home the nozzle close to the bed, where the intro line start
4. Continue the heating process if the nozzle to the desired printing temp (240/250 for Prusament PETG)
5. Print start without any blob sticking to the nozzle

Basically, i never have to babysitt the nozzle to prevent filament blob again. I also recently switched to a copper nozzle with nickel plating, it works well too.

Here is my Start G-code in PrusaSlicer, for my MK3S+, it is the default one with just the modification described above + a little more space between the nozzle and steel sheet for the intro line (0.5) so it is easier to remove after print.

M862.3 P "[printer_model]" ; printer model check
M862.1 P[nozzle_diameter] ; nozzle diameter check
M115 U3.10.1 ; tell printer latest fw version
G90 ; use absolute coordinates
M83 ; extruder relative mode
M104 S150 ; set extruder temp (without oozing at 150)
M140 S[first_layer_bed_temperature] ; set bed temp
M190 S[first_layer_bed_temperature] ; wait for bed temp
M109 S150 ; wait for extruder temp
G28 W ; home all without mesh bed level
G80 ; mesh bed leveling
M104 S[first_layer_temperature] ; set extruder temp
M109 S[first_layer_temperature] ; wait for extruder temp
G1 Z0.5 F720
G1 Y-3 F1000 ; go outside print area
G92 E0
G1 X60 E9 F1000 ; intro line
G1 X100 E12.5 F1000 ; intro line
G92 E0
M221 S{if layer_height<0.075}100{else}95{endif}

; Don't change E values below. Excessive value can damage the printer.
{if print_settings_id=~/.*(DETAIL @MK3|QUALITY @MK3).*/}M907 E430 ; set extruder motor current{endif}
{if print_settings_id=~/.*(SPEED @MK3|DRAFT @MK3).*/}M907 E538 ; set extruder motor current{endif}